Tel: +502 2339-6484 [email protected] www.servitecsa.com.gt 14 Avenida A 10-30 zona 13 Guatemala, Guatemala

Disc Coupling Catalog

Thomas Flexible Disc Couplings (Metric)

Table Of Contents DESCRIPTION PAGE Application Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Flexible Coupling Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quick Coupling Selection Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ordering Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 4 5 6 7

CLOSE COUPLED COUPLINGS Series 54RDG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 DBZ, DBZ-A, DBZ-B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 SPACER COUPLINGS Series XTSR52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10, 11 Series XTSR71 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12, 13 AMR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 CMR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15, 16 BMR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Series 44.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18, 19 FLOATING SHAFT COUPLINGS SN-GA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Floating Shaft Coupling Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 SN, SF, SV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 23 SN Adjustable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 SINGLE FLEXING DISC COUPLINGS ST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 SN Single . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 HIGH PERFORMANCE COUPLINGS THP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Series 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 MINIATURE COUPLINGS CC, CA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 CB, CBC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 CE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ADDITIONAL COUPLINGS AND TECHNICAL DATA Backstop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Series 52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Series 71 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33, 34 Series 54RD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Bore Specifications, Taper-Lock and Q.D. Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Customized Flexible Disc Couplings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37, 38

2

Rexnord Thomas Coupling Application Guide

Coupling Type

Typical Applications

Coupling Type

Typical Applications

SN

Close-coupled applications. Suitable as replacement for gear and grid couplings. SF Series 54RDG

Turbines, pumps, compressors, test stands, generators, speed increasers, fans (cooling tower, mine ventilating, forced and induced draft), paper mill drives, line shafts, printing machines, pumps. Available as a standard in corrosionresistant materials.

Mixers, compressors, agitators, blowers and fans, centrifugal pumps, conveyors. DBZ, DBZ-A, DBZ-B

Vertical drives such as sewage pumps, printing machines, marine pumps. Available as a standard in corrosion-resistant materials. Pumps and compressors (centrifugal, rotary, lobe and axial), speed increasers, fans, dynamometers.

SV

Series XTSR52

Pumps and compressors with popular shaft separation standards, blowers, fans, speed increasers.

Same applications as SN but where axial and/or angular adjustment is desired. Adjustable Length SN

Series XTSR71

AMR

Reciprocating pumps and compressors, fan drives, blowers, heavy-duty industrial drives, crushers, extruders, hoists, dredges, generators, chippers, calenders, mill drives, conveyors.

ST

Engine drivers, reciprocating pumps and compressors, heavy-duty industrial drives where flywheel mounting is required. SN Single

CMR

BMR

Blowers, fans, crushers, marine drives, dredge pumps, hoists, heavy-duty industrial drives, reciprocating pumps and compressors, paper mill drives, conveyors

THP

Engine drivers, reciprocating pumps and compressors, heavy-duty industrial drives where flywheel mounting is required.

Accommodates angular misalignment only. May be used with intermediate solid shaft for applications similar to BMR, but with high speed capacity. Available in corrosion-resistant materials.

Turbines, pumps, compressors, speed increasers, test stands.

Turbines, pumps, compressors, test stands, generators, speed increasers. Series 63

Series 44

Pulp and paper machines, line shafts, pelletizers, crushers and mill drives. Replacing long span gear couplings, bolting to existing rigid hubs. SN-GA

Accommodates angular misalignment only. Three-bearing applications where radial load is supported by the coupling, such as singlebearing generators, V-belt sheaves, etc.

Tachometers, encoders, switches, ball screws, test stands, pumps, compressors, centrifuges, theodolites, sonar, radar, scales, carburetors. Miniature Couplings

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

3

Rexnord Thomas Flexible Couplings Flexible Coupling Overview A flexible coupling is a device used to connect the ends of two shafts, transmit torque, and at the same time, accommodate slight misalignments which develop in service. The primary functions of all flexible couplings are:

1. To transmit power from one shaft to another, efficiently and effectively.



2. To accommodate slight shaft misalignments which develop in service.

The secondary functions of flexible couplings are:



2. Minimize “installation” and “maintenance” difficulties. S­ hafts become misaligned during operation because of settling foundations, the effects of heat, vibration, etc. These misalignments take place in the form of angular misalignment, parallel misalignment or axial movement of the shafts; therefore, to get full service life from any flexible coupling, it is necessary to:



a. Assure proper shaft alignment during initial installation.



b. Occasionally check for and correct shaft misalignments during operation.

1. Protect connected equipment:

a. Absorb shock, vibration and pulsations. b. Decrease cross load on bearings. c. Accept load reversals. d. Minimize backlash.

Misalignment Overview Misaligned shafts not properly coupled are subject to severe stresses that damage bearings and seals. Any or all of the misalignments shown in the above diagrams are present in all connected drives; therefore, it is imperative that flexible couplings be used to avoid costly damage to your equipment. Initial alignment of machinery is one of the most critical factors affecting coupling performance and reliability. Each particular style of coupling has its own misalignment capabilities. The installation and alignment instructions outline the initial alignment requirements. These initial values are approximately one-third of the total coupling misalignment capacity. This means that the coupling has ample reserve to compensate for operational misalignments which develop as a result of bearing wear, foundation settling, thermal growth, pipe strain, etc. However, the closer the initial alignment, the

more reserve margin a coupling has to compensate for misalignments during the life of the machine. A coupling that operates with large amounts of misalignment will have a limited life, while a coupling operating within capacity will have infinite life. The customer and coupling manufacturer must mutually select the correct size and type coupling for the application. Good service life will then become a reality if proper installation and alignment procedures are followed. The following pages show basic coupling arrangements and load classifications based on years of experience in coupling applications in all phases of power transmission. Any unusual operating or misalignment conditions should be referred to Rexnord to assure proper selection of size and type of coupling.

Maximum RPM and Balance Recommendations Rexnord has developed recommendations for coupling balancing based on AGMA 9000-D11 and the inherent balance level of the various couplings shown in this catalog. These are shown on the data sheets as follows: Max. RPM Not Balanced This is the maximum operating speed where the coupling will operate under normal conditions, and not create unacceptable vibration due to coupling unbalance. This is based on many years of operating experience on a wide variety of drive systems. Max. RPM Balanced This is the maximum operating speed where the coupling, after balancing, will still be compatible with the typical drive system. Consult Rexnord for speed requirements in excess of this value; special designs or manufacturing procedures may be required. Certain coupling types are not suitable for dynamic balancing, and should not be used if balancing is required. These types are AMR, CMR, BMR and ST. Series 63 and THP couplings are always furnished dynamically balanced in accordance with the requirements of the application.

CAUTION: All rotating power transmission products are potentially dangerous and must be properly guarded. Never operate coupling without an OSHA-approved guard.

4

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Coupling Selection Quick Coupling Selection Procedure The following procedure can be used to select disc couplings for most applications. For applications involving other than normal loading in design, special considerations must be given to coupling selection. Rexnord application engineers are readily available for selection, advice and assistance. 1. Select coupling type. Refer to page 3 and select the type of coupling to suit your application. If an application requires a special purpose coupling, refer application details to the local Rexnord Representative. 2. Calculate operating torque of application. a. Use the following formula to calculate operating torque of application: i. Torque (Nm) = Driver Kilowatts x 9.550

Operating Speed

3. Determine service factor. a. Find application in table on page 6; use the service factor value assigned to that application. b. Note: if application not listed, see Load Classification Table on page 6. c. Note: The service factor table considers the driven equipment only and assumes a normal electric or turbine driver. For prime movers of the reciprocating type (engines, etc) use the engine drive service factor adder on page 6 to the selected service factor. 4. Multiply operating torque by the selected service factor to determine minimum required torque rating of coupling. 5. Find coupling in the coupling type section of catalog that meets the minimum required torque rating. 6. Verify that the selected coupling will accommodate the shaft sizes or flywheel if engine mount, of driving and driven equipment. Shaft diameters should be equal or less than published maximum bore of selected coupling. a. If coupling will not accommodate shaft sizes, select the next largest size that will accommodate shaft sizes. 7. Verify coupling selected can accommodate operating speed of application. 8. Check limiting data. a. Other data in coupling type section of catalog can be used to verify that selected coupling will work in application. Additional data can help verify application envelope of space, weight and WR2 considerations. IMPORTANT NOTE: The coupling selection criteria is intended for the determination of the coupling and style only. It is also recommended that the system be analyzed for torsional and lateral stability using the specific mass elastic data available from Rexnord. The analysis is the responsibility of the user since the coupling is only a single component in the system.

Rexnord Thomas Coupling Nomenclature Use the following nomenclature guide to identify and order Thomas Disc Couplings. Coupling Size 2506

Type/Series XTSR71 XTSR71 XTSR52 DBZ AMR CMR SR54RDG SN THP SR63 SR71 SR71-8 SR52

Modifications B

Current Adapter Series Current Non-adapter Series Close Coupled Series Heavy Duty Fixed Spacer Series Heavy Duty Flywheel Mount Spacer Series Close Coupled Series Long Span Spacer Series High Performance High Performance Adapter Series 6-bolt Adapter Series 8-bolt Non-adapter Spacer Series

B = Balanced ES = Engineered Special L = Long Hub W = Large Hub w/ adapter C = Special Coating (defined on drawings) D = Special Disc Pack Material (defined on drawings) R = Retrofit assembly (XTSR71 with special adapters to bolt up to John Crane or Thomas adapter hubs)

Distance Between Shaft Ends (“C” Length) 9.00 9.00" N/A 130 mm

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Hub Bore 3.250 x 2.50 110 mm x Taper 1.00 x 2.00 Taper x 3.00 etc.

5

Rexnord Thomas Coupling Selection Typical Service Factors – Motor And Turbine Driven Equipment* Application

Service Factor

AGITATORS Pure Liquids...............................................................................................1.0 Variable Density..........................................................................................1.5 ALTERNATOR...........................................................................................1.5 BLOWERS Centrifugal..................................................................................................1.0 Lobe............................................................................................................1.5 Vane............................................................................................................1.5 BRIQUETTER MACHINES.......................................................................2.0 CAN FILLING MACHINES.......................................................................1.0 CANE KNIVES...........................................................................................2.0 CAR DUMPERS........................................................................................2.5 CAR PULLERS.........................................................................................1.5 CLAY WORKING MACHINERY..............................................................2.0 COMPRESSORS Centrifugal..................................................................................................1.0 Lobe, Vane, Screw.......................................................................................1.5 Reciprocating - Multi-Cylinder...............................................Consult Rexnord Axial............................................................................................................1.0 CONVEYORS - uniformly loaded or fed....................................................1.5 CONVEYORS - heavy duty - not uniformly fed..........................................2.5 CRANES AND HOISTS............................................................................2.0 CRUSHERS...............................................................................................3.0 DREDGES Cable Reels.................................................................................................2.0 Conveyors...................................................................................................1.5 Cutter Head Drives......................................................................................2.5 Jig Drives....................................................................................................2.5 Maneuvering Winches.................................................................................2.0 Pumps........................................................................................................2.0 Screen Drives..............................................................................................2.0 Stackers......................................................................................................2.0 Utility Winches............................................................................................1.5 ELEVATORS Bucket.........................................................................................................2.0 Centrifugal Discharge..................................................................................1.5 Escalators...................................................................................................1.5 Freight.........................................................................................................2.0 Gravity Discharge........................................................................................1.5 EXTRUDERS Plastic.........................................................................................................2.0 Metal...........................................................................................................2.5 FANS Centrifugal Forced Draft (Hostile Environment)..........................................................1.5 Induced Draft (Hostile Environment)........................................................1.5 Axial Forced Draft (Hostile Environment)..........................................................1.5 Induced Draft (Hostile Environment)........................................................1.5 Mine Ventilation..........................................................................................2.5 Cooling Towers...........................................................................................1.5 Light Duty Blower & Fans...........................................................................1.0 FEEDERS Light Duty...................................................................................................1.5 Heavy Duty..................................................................................................2.5 FOOD INDUSTRY Beet Slicer...................................................................................................2.0 Cereal Cooker.............................................................................................1.5 Dough Mixer...............................................................................................2.0 Meat Grinders.............................................................................................2.0 Can Filling Machine....................................................................................1.0

Application

Service Factor

Bottling.......................................................................................................1.5 GENERATORS Non-Welding...............................................................................................1.5 Welding.......................................................................................................3.0 HAMMER MILLS.....................................................................................3.0 LUMBER INDUSTRY Barkers - Drum Type...................................................................................2.5 Edger Feed..................................................................................................2.0 Live Rolls....................................................................................................2.0 Log Haul - Incline.......................................................................................2.0 Log Haul - Well Type..................................................................................2.0 Off Bearing Rolls.........................................................................................2.0 Planer Feed Chains.....................................................................................2.0 Planer Floor Chains....................................................................................2.0 Planer Tilting Hoist.....................................................................................2.0 Slab Conveyor............................................................................................1.5 Sorting Table...............................................................................................1.5 Trimmer Feed..............................................................................................2.0 MACHINE TOOLS Bending Roll...............................................................................................2.0 Plate Planer.................................................................................................1.5 Punch Press - Gear Driven..........................................................................2.0 Tapping Machines.......................................................................................2.5 Other Machine Tools Main Drives..............................................................................................1.5 Auxiliary Drives........................................................................................1.5 METAL MILLS Draw Bench - Carriage................................................................................2.5 Draw Bench - Main Drive............................................................................2.5 Forming Machines......................................................................................2.5 Slitters........................................................................................................2.0 Table Conveyors Non-Reversing.........................................................................................2.5 Reversing.................................................................................................3.0 Wire Drawing & Flattening Machine............................................................2.0 Wire Winding Machine................................................................................2.0 MILLS, ROTARY TYPE Ball.............................................................................................................2.5 Cement Kilns..............................................................................................2.0 Dryers & Coolers........................................................................................2.0 Kilns...........................................................................................................2.0 Pebble.........................................................................................................2.0 Rod.............................................................................................................2.0 Tumbling Barrels.........................................................................................2.0 MIXERS Concrete Mixers..........................................................................................2.0 Drum Type..................................................................................................2.0 OIL INDUSTRY Chillers.......................................................................................................1.5 Oil Well Pumping........................................................................................2.0 Paraffin Filter Press.....................................................................................2.0 Rotary Kilns................................................................................................2.0 PAPER MILLS Barker Auxiliaries, Hydraulic.......................................................................2.5 Barker, Mechanical......................................................................................2.5 Barking Drum (Spur Gear Only)..................................................................2.5 Beater & Pulper...........................................................................................2.0 Bleacher......................................................................................................1.0 Calenders....................................................................................................2.0 Converting Machines, except Cutters, Platers........................................................................................1.5 Couch.........................................................................................................2.0 Cutters, Platers...........................................................................................2.0 Cylinders....................................................................................................2.0 Dryers.........................................................................................................2.0 Felt Stretcher...............................................................................................1.5 Felt Whipper................................................................................................2.0 Jordans.......................................................................................................2.0 Log Haul.....................................................................................................2.0

Application Presses.......................................................................................................2.0 Reel.............................................................................................................1.5 Stock Chests...............................................................................................1.5 Suction Roll................................................................................................2.0 Washers and Thickeners..............................................................................1.5 Winders......................................................................................................1.5 PRINTING PRESSES...............................................................................1.5 PULLERS Barge Haul..................................................................................................2.0 PUMPS Centrifugal General Duty (Liquid)...............................................................................1.0 Boiler Feed...............................................................................................1.5 Slurry (Sewage, etc.)................................................................................1.5 Dredge.....................................................................................................2.0 Reciprocating Double Acting..........................................................................................2.0 Single Acting 1 or 2 Cylinders....................................................................................2.5 3 or more Cylinders..............................................................................2.0 Rotary - Gear, Lobe, Vane.....................................................................1.5 RUBBER INDUSTRY Mixer - Banbury..........................................................................................3.0 Rubber Calendar.........................................................................................2.0 Rubber Mill (2 or more)..............................................................................2.5 Sheeter........................................................................................................2.0 Tire Building Machines...............................................................................2.5 Tire & Tube Press Openers.........................................................................1.0 Tubers and Strainers...................................................................................2.0 SCREENS Air Washing................................................................................................1.0 Rotary - Stone or Gravel.............................................................................1.5 Traveling Water Intake.................................................................................1.5 Vibratory.....................................................................................................2.5 SEWAGE DISPOSAL EQUIPMENT........................................................1.5 SEWAGE TREATMENT PUMPS.............................................................1.5 TEXTILE INDUSTRY Batchers......................................................................................................1.5 Calenders....................................................................................................2.0 Card Machines............................................................................................1.5 Cloth Finishing Machines (washers, pads, tenters) (dryers, calenders, etc.)............................................................................1.5 Dry Cans.....................................................................................................2.0 Dryers.........................................................................................................1.5 Dyeing Machinery.......................................................................................1.5 Looms.........................................................................................................1.5 Mangles......................................................................................................1.5 Nappers......................................................................................................1.5 Soapers.......................................................................................................1.5 Spinners.....................................................................................................1.5 Tenter Frames..............................................................................................1.5 Winders (Other than Batchers)....................................................................1.5 WINDLASS...............................................................................................2.0 WOODWORKING MACHINERY.............................................................1.5 *Service Factors in this table are for driven equipment based on smooth prime movers such as electric motors and turbines. For reciprocating prime movers, such as diesel or gas engines, add the following to the Service Factor: For 8 or more cylinders, add 0.5. For 6 cylinders, add 1.0. For 4 cylinders, add 1.5. For less than 4 cylinders, consult Rexnord.

Service Factors – Service Factors are a means of classifying different equipment and applications into various load classifications. Due to variations in application of equipment, service factors are used to adjust equipment ratings to accommodate for variable loading conditions. Load Classifications

Service Factors

Continuous service and running loads vary only slightly.

1.0

For shock loading and substantial torque variations.

2.5

Torque loading varies during operation of the equipment.

1.5

For heavy shock loading or light reversing drives.

3.0

2.0

Reversing torque loads do not necessarily mean reversal of rotation. Depending upon severity of torque reversal, such loads must be classified between “medium” and “extreme.”

Torque loading varies during operation, frequent stop/start cycles are encountered.

6

Load Classifications

Service Factors

Consult Rexnord

Rexnord Thomas Flexible Disc Couplings Ordering Instructions Complete steps 1 through 6 below. See page 35 for types of fits and shaft diameters. 1. Determine quantity. 2. Determine coupling size and type. 3. Determine bore sizes. Couplings will be bored in accordance with ANSI/AGMA 9112-A04. The type of bore fit normally supplied by Rexnord is listed below.

Ordering Information – Tapered Bores Information Required 1. Drawing of hub showing complete bore and keyway details. - O­R 2. Drawing of shaft with dimensions shown below, allowing Rexnord to bore hubs to suit.

Bore Specifications DBZ AMR, BMR, CMR, SN, SF, SV, ST, 52, 54RDG, 54RD, 71, 71-8, XTSR52, XTSR71 Series 63/THP Miniatures

Straight Bore – Clearance fit – stocked Straight Bore – Interference fit on bore-to-order sizes ➀ Taper Bore – To customer specification Straight Bore – Interference fit on all bores ➀ Taper Bore – To customer specification All bores per customer specification See pages 28-30.

➀ Unless specified otherwise by customer. NOTE: Rexnord recommends an­interference fit be used whenever possible. 4. 5. 6.

Determine keyway and set screw sizes (if non-standard). Determine dynamic balancing (if required). Additional data (where applicable). a. Disc pack material ­­(if other than Tomaloy). b. Free or interference fit on shafts (if shaft diameters are given). c. Complete details on tapered bore requirements, see supplemental taper bore information section below. d. On DBZ-A Couplings: 1. Identify bore of standard hub and bore of extended hub. e. On SN, SF, and SV Couplings: 1. Corrosion resistance class 2. “L” dimension 3. Dynamic balancing if required 4. Sketch of stub shaft (SF only) if non-standard 5. On SV, identify bore of upper hub and lower hub 6. Operating speed required f. On BMR Couplings: 1. Solid shaft diameter, if ordered 2. “L” dimension g. On CMR Couplings: 1. Adapter: (a) Outside diameter (b) Bolt circle diameter (c) Bolt hole diameter ­ (d) Number of bolts and spacing

(LD) Large diameter, specify in decimals. (S): Length of taper; measure parallel to shaft centerline. (T): Taper per foot; difference in diameter in one foot length. (P): Clearance space for drawing hub up on tapered shaft. Usually 1/8 in. or 1/4 in., depending on shaft size and taper. Keyway: Width, depth. NOTE: Specify if keyway is parallel to taper or if parallel to shaft center line. Specify depth at larger diameter of taper if keyway is parallel to shaft center line.

Supplemental Taper Bore Information With connected equipment in fixed position, the following additional information is necessary: Dimensions “V” and “X” must be given when one or both connected machines are fixed on their bases. Advise if dimension “X” is fixed, or if variable between what limits.

A fixed “X” dimension may require altered or special coupling hubs. Often the straight bored hub can be positioned on its shaft allowing the use of a standard coupling. See illustrations below. Consult AGMA Standard 9002-A86 “Taper Bores for Flexible Couplings” for new applications.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

7

Rexnord Thomas Flexible Disc Couplings Close-Coupled Series 54RDG Series 54RDG couplings are reduced diameter gear and grid replacement couplings. Applications include any situation where the overall shaft-to-shaft spacing is minimal. The center member of the 54RDG is split axially, which permits maintenance of the couplings without moving the hubs or the connected equipment. Center member is piloted into the adapter providing high-speed potential at high-torque density. Construction Hubs and Center members: Carbon steel Bolts: Alloy steel Disc Packs: Stainless steel Coatings Available: Consult Rexnord Other disc pack materials such as Tomaloy, Monel and Inconel are available; please consult Rexnord. Misalignment: 1/3° per disc pack When specified, Series 54RDG couplings meet all requirements of API 610 or API 671. If application requires API specification, please consult Rexnord.

General Dimensions (mm) Max. Max. Coupling Bore* Bore* Size Internal External

125 162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925

30 42 58 65 74 95 100 114 120 130 137 150 166 195 206 223 235 248

34 50 58 70 84 97 110 120 130 140 146 166 176 205 224 241 250 267

A

B

C

C1**

F

F1**

H

N

G

C2***

F2***

97 114 141 149 175 199 223 247 267 287 327 367 406 464 503 546 584 635

47.8 47.8 53.8 55.6 65.8 72.1 83.3 90.4 100.8 114.3 121.4 136.4 152.4 177.8 196.9 209.6 225.6 251.7

3.0 3.0 3.0 3.0 4.8 4.8 6.4 6.4 6.4 7.9 7.9 9.7 9.7 9.7 12.7 12.7 14.2 15.7

44.5 45.0 49.8 51.6 61.5 66.5 77.7 82.8 91.7 105.4 109.7 123.7 137.2 158.0 177.8 187.2 202.4 226.3

99 99 111 114 136 149 114 136 149 114 136 149 114 136 149 114 136 149

126 137 156 174 200 225 256 275 301 334 358 400 442 514 565 606 650 719

4.3 4.3 5.6 5.6 6.4 7.6 5.6 6.4 7.6 11.9 12.7 14.7 17.0 19.1 21.3 23.1 25.4 27.7

6.9 7.4 9.1 9.1 11.9 12.7 13.7 15.0 15.7 18.0 19.8 23.1 24.9 30.5 32.3 34.0 35.6 38.1

45 59 83 89 105 127 140 154 167 178 200 222 237 276 299 318 335 359

85.9 86.9 96.5 100.1 118.1 128.3 149.1 159.3 177.0 202.9 211.6 237.7 264.7 306.3 342.9 361.7 390.7 436.9

152 176 201 233 264 300 340 363 393 432 466 517 570 662 724 781 835 920

* Uses Series 52 hubs. Non-bored hubs available upon request. ** Hubs may be reversed for alternate shaft spacing. *** Both hubs reversed.

Coupling Size

125 162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925

Max. Kilowatt Per 100 RPM

Max. RPM

Service Factor 1.0

➀ Not Balanced

➀ Balanced

3.2 6.3 12.4 20.7 38.8 60.8 79.2 118.7 158.9 178 291.5 390.9 513.3 798.4 992.5 1276.3 1506.2 2039.9

4,600 4,200 3,800 3,700 3,600 3,000 2,800 2,500 2,300 2,200 2,000 1,900 1,800 1,700 1,550 1,450 1,350 1,300

10,500 9,700 8,600 8,400 7,400 6,700 6,200 5,800 5,400 5,000 4,600 4,200 3,900 3,600 3,400 3,200 3,000 2,800

Max. Continuous Torque (Nm)

Peak Overload Torque (Nm)

➁ Weight (kg)

➁ WR2 (kg-m2)

Axial Capacity (mm)

305 604 1,185 1,976 3,706 5,803 7,552 11,323 15,161 16,979 27,817 37,300 48,973 76,242 94,772 121,877 143,830 194,786

610 1,209 2,370 3,952 7,412 11,606 15,104 22,646 30,322 33,958 55,634 74,600 97,946 152,484 189,543 243,753 287,659 389,572

3.1 4.2 7.3 8.6 14.1 20.9 30.0 40.0 53.1 69.9 101.7 147.1 198.4 298.3 380.9 472.2 572.0 767.3

0.0037 0.0070 0.0196 0.0249 0.0562 0.112 0.202 0.339 0.521 0.787 1.45 2.62 4.36 8.49 12.70 18.70 26.01 40.96

±0.91 ±0.91 ±0.91 ±0.91 ±1.09 ±1.29 ±1.42 ±1.57 ±1.70 ±1.82 ±2.02 ±2.33 ±2.59 ±2.92 ±3.17 ±3.45 ±3.65 ±3.96

➂

➀ See page 4 for explanation of RPM limits and balancing recommendations. ➁ Weight and WR 2 with standard length hubs, maximum bore and standard “C.” ➂ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modifications or the addition of end-float restricting devices.

8

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Flexible Disc Couplings Close-Coupled Types DBZ, DBZ-A, DBZ-B The standard DBZ coupling has two hubs inverted inside the disc pack and is used where overall shaft to shaft spacing is minimal. DBZ style has both hubs with inverted orientation. DBZ-A style has one hub extended to permit taper boring. DBZ-B style has both hubs extended to allow for greater spacing where required.

Construction Hubs and Center Assembly: Carbon steel Bolts: Alloy steel Disc Packs: Tomaloy Coatings Available: Consult Rexnord

Other disc pack materials such as stainless steel, Monel and Inconel are available; please consult Rexnord. Misalignment: 1/2° per disc pack

DBZ-A (one standard and one extended hub)*

DBZ

DBZ-B (two extended hubs)*

General Dimensions (mm) Extended Coupling Standard Hub Hub Size Max. Bore Max. Bore

50 62 75 101 126 163 201 226 263 301 351 401 451

Coupling Size

50 62 75 101 126 163 201 226 263 301 351 401 451

15 17 20 27 35 50 55 64 78 84 97 110 130

15 17 20 28 35 50 58 70 81 95 110 120 130

Max. Kilowatts Per 100 RPM

A

B1

B2

C1

C2

C3

E

F1

F2

F3

G

P1

P2

T

51 62 68 82 98 116 136 154 178 203 238 272 308

22 28 28 35 38 43 49 60 70 79 94 106 121

22 28 28 35 41 48 54 92 76 87 103 117 133

8.1 9.7 9.4 17.5 24.4 24.1 24.4 31.0 33.3 38.1 45.7 49.3 53.8

21.3 26.7 26.9 35.3 43.2 43.2 49.8 64.3 71.4 81.0 98.0 109.7 119.9

34.5 43.7 44.5 52.8 62.2 62.2 75.2 97.5 109.5 124.0 150.4 170.2 184.9

34.5 43.7 44.5 52.8 62.2 62.2 75.2 97.5 109.5 124.0 150.4 170.2 184.9

52.8 65.0 66.3 87.6 100.6 110.0 122.9 151.9 173.0 196.6 233.2 262.1 296.2

66.0 82.0 83.8 105.4 122.4 133.9 152.9 191.3 217.4 247.7 294.9 333.5 373.9

79.2 99.1 101.3 122.9 144.5 157.7 182.9 230.6 261.9 298.7 356.6 404.9 451.6

25 30 37 43 52 70 83 96 113 129 148 168 187

32 40 40 43 51 46 59 68 76 90 114 130 138

20 27 27 25 29 22 29 29 32 40 52 59 60

4.8 6.4 6.4 7.9 10.4 10.4 14.2 16.8 19.1 21.3 26.9 30.2 34.0

Max. RPM

Service Factor 1.0

Not Balanced

Balanced

0.2 0.3 0.4 0.8 1.5 2.0 3.6 6.5 10.2 15.3 26.7 39.3 51.4

6,000 6,000 6,000 6,000 5,500 5,000 4,600 4,100 3,700 3,300 2,900 2,700 2,600

9,000 8,200 7,800 7,100 6,500 6,000 5,500 5,200 4,800 4,500 4,100 3,900 3,600

Max. Continuous Torque (Nm)

Peak Overload Torque (Nm)

16 28 40 78 142 192 341 621 972 1458 2553 3751 4904

25 42 60 118 215 294 508 938 1458 2192 3830 5627 7355

➁

➁

WR2 (kg-m2)

Weight (kg) DBZ

DBZ-A

DBZ-B

DBZ

DBZ-A

DBZ-B

0.3 0.7 0.9 1.5 2.5 3.8 6.5 9.5 15.0 22.7 37.7 56.8 77.2

0.3 0.7 0.9 1.5 2.5 3.9 6.5 10.0 15.4 23.6 39.5 56.8 81.7

0.3 0.7 0.9 1.5 2.6 4.0 7.0 10.4 15.9 24.5 40.9 61.3 81.7

0.0001 0.0002 0.0004 0.0013 0.0029 0.006 0.016 0.028 0.058 0.107 0.268 0.499 0.927

0.0001 0.0002 0.0004 0.0013 0.0030 0.006 0.016 0.028 0.061 0.110 0.274 0.500 0.928

0.0001 0.0002 0.0004 0.0013 0.0030 0.006 0.016 0.031 0.061 0.113 0.282 0.500 0.957

➀ Axial Capacity (mm)

±0.58 ±0.71 ±0.81 ±0.96 ±1.16 ±1.44 ±1.70 ±1.93 ±2.26 ±2.59 ±2.99 ±3.45 ±3.91

➀ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modifications or the addition of end-float restricting devices. ➁ Weight and WR2 at maximum bore. * Extended hubs can be supplied with straight bores or taper bores.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

9

Rexnord Thomas Flexible Disc Couplings Thomas XTSR52 Spacer Type Series Coupling Optimized design and construction include stainless disc packs and corrosion protection; additional modifications may be made to reduce coupling weight, or special mountings to make it an economical alternative to high performance styles. Common engineered solutions are available such as torque overload protection, electrically insulated, spark resistant and alloy construction. The XTSR52 couplings are an all-purpose high-speed, high-torque coupling used where minimum coupling weight is desirable. The XTSR52 couplings are API 610, ISO 10441, ISO 14691 compliant, and ATEX II 2GD c T6 certified. Common applications include motor and turbine driven pumps, compressors, fans, synchronized rollers, wire feeders and blowers.

Construction Hubs and Center assembly: Carbon steel Bolts: Alloy steel Disc Packs: Stainless steel Coatings Available: Manganese Phosphate provided as standard, other coatings available upon request

General Dimensions (mm) Coupling ➂ Size Max. Bore

726 826 996 1088 1298 1548 1698 1928 2068 2278 2468 2698 2888 3058 3358 3668 3908 4178 4588 4918 5258

45 51 60 65 78 94 104 118 127 140 150 165 175 185 205 225 240 255 280 300 320

Coupling Size

726 826 996 1088 1298 1548 1698 1928 2068 2278 2468 2698 2888 3058 3358 3668 3908 4178 4588 4918 5258 ➀ ➁ ➂ ➃

10

A

B

Min. C

Standard Max. C

Std. C

F

G

N

95 108 129 140 166 197 218 245 264 291 313 343 371 395 427 466 490 524 587 630 672

56 63 74 81 97 116 128 147 156 172 187 203 220 235 257 281 303 322 350 375 401

40 47 54 58 70 81 89 96 109 115 123 139 151 152 168 184 185 200 226 240 257

207.3 227.6 283.5 287.5 359.7 435.9 468.0 543.6 572.0 636.0 691.9 743.7 771.1 847.3 914.4 914.4 914.4 914.4 914.4 914.4 914.4

88.9 127.0 127.0 127.0 127.0 139.7 177.8 177.8 203.2 203.2 228.6 228.6 254.0 254.0 254.0 304.8 304.8 304.8 457.2 457.2 457.2

200.9 253.0 275.0 289.0 321.0 371.7 433.8 471.8 515.2 547.2 602.6 634.6 694.0 724.0 768.0 866.8 910.8 948.8 1157.2 1207.2 1259.2

63.8 71.8 84.4 92.1 110.6 132.4 146.9 167.7 178.6 196.7 213.5 232.1 246.0 263.0 288.1 315.2 339.2 361.1 392.1 420.3 449.5

8.6 9.3 9.6 10.4 12.9 14.8 15.8 17.1 18.4 19.2 20.5 23.5 25.2 25.2 27.3 30.4 30.4 32.4 35.9 38.1 40.3

Max. Kilowatt Per 100 RPM Service Factor 1.0

➃ Not Balanced

Balanced

Max. Continuous Torque (Nm)

3.1 5.8 9.7 23.0 37.2 61.9 85.7 116 161 209 274 376 492 545 735 987 1,080 1,340 1,970 2,460 2,970

12,000 10,900 9,800 9,000 8,000 7,100 6,600 6,100 5,800 5,500 5,200 4,800 4,600 4,400 4,200 3,900 3,800 3,600 3,400 3,200 3,100

20,000 18,500 15,000 14,000 12,000 10,000 9,100 8,500 7,800 7,100 6,500 6,000 5,700 5,400 4,700 4,400 4,100 3,900 3,600 3,300 3,100

297 554 927 2,190 3,550 5,910 8,190 11,100 15,400 19,900 26,200 35,900 47,000 52,000 70,200 94,300 103,000 128,000 189,000 235,000 283,000

Max. RPM

Peak Overload Torque (Nm)

Weight (kg)

594 1,110 1,850 4,390 7,100 11,800 16,400 22,200 30,700 39,900 52,400 71,900 94,000 104,000 140,000 189,000 205,000 256,000 377,000 470,000 567,000

2.41 3.87 5.92 8.55 14.2 23.2 32.1 45.5 57.7 75.6 97.1 127 164 191 245 325 377 460 650 803 963

➁

Weight Change Per mm of “C” (kg/mm)

0.00363 0.00562 0.00510 0.00983 0.0123 0.0176 0.0219 0.0268 0.0339 0.0395 0.0475 0.0606 0.0777 0.0771 0.0958 0.117 0.115 0.134 0.188 0.222 0.248

➁

WR2 (kg-m2)

0.00258 0.00534 0.0118 0.0202 0.0485 0.113 0.190 0.343 0.506 0.804 1.20 1.90 2.84 3.71 5.70 9.04 11.7 16.3 28.0 39.8 54.9

All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. Weight and WR2 at maximum bore and standard “C” dimension listed. Consult Rexnord for minimum rough bore sizes. XTSR52 couplings meet AGMA Class 9 balance requirements as manufactured with interference fit bore and close fit keyway. If clearance fit and/or setscrews are required, consult Rexnord.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

WR2 Change Per mm of “C” (kgm2-mm)

0.00000218 0.00000459 0.00000609 0.0000130 0.0000252 0.0000528 0.0000773 0.000124 0.000177 0.000254 0.000365 0.000544 0.000759 0.000899 0.00134 0.00196 0.00233 0.00307 0.00479 0.00643 0.00833

➀

Axial Capacity (mm)

±1.3 ±1.5 ±1.8 ±1.3 ±1.6 ±1.8 ±2.0 ±2.3 ±2.5 ±2.7 ±3.0 ±3.2 ±3.5 ±3.7 ±4.0 ±4.4 ±4.7 ±5.0 ±5.5 ±5.9 ±6.3

Rexnord Thomas Flexible Disc Couplings Thomas XTSR52 Spacer Type Series Coupling Components List ➁ Standard Spacer Component

➀

Hub

88.9 mm (3.5")

100 mm

111.1 mm (4.38")

127 mm (5.0")

140 mm

180 mm

190.5 mm (7.5")

203.2 mm (8.0")

228.6 mm (9.0")

250 mm

➂

➃

Disc Pack Hardware Kit

Disc Pack

10001561 10001562 10001563 10001564 10001565 10001566 10001567 10001568 10001569 10001570 10001571 10001572 10001573 10001574 10001575 10001576 10001577 10001578 10001579 10001580 10001581

10000091 10000092 10000093 10000094 10000095 10000096 10000097 10000098 10000099 10000100 10000101 10000102 10000103 10000104 10000105 10000106 10000107 10000108 10000109 10000110 10000111

Size

726 826 996 1088 1298 1548 1698 1928 2068 2278 2468 2698 2888 3058 3358 3668 3908 4178 4588 4918 5258

10001191 10000921 10000831 – 10000922 10000910 – – – – – 10001192 10000923 10000832 – 10000924 10000911 – – – – – 10001193 – 10000912 10000925 10000926 10000833 10000913 – – – – 10001194 – – 10000927 10000928 10000834 10000914 – – – – 10001195 – – 10000929 10000930 10000835 10000915 – – – – 10001196 – – – 10000931 10000916 10000836 10000932 10000933 – 10000917 10001197 – – – – – 10000837 10000934 10000935 – 10000918 10001198 – – – – – 10000838 10000936 10000937 10000938 10000919 10001199 – – – – – 10000920 10000939 10000940 10000941 10000839 10001200 – – – – – – – 10000942 10000943 10000840 10001201 – – – – – – – – 10000944 10000841 10001202 – – – – – – – – 10000945 10000842 10001203 – – – – – – – – – 10000843 10001204 – – – – – – – – – 10000844 10001205 – – – – – – – – – 10000845 10001206 – – – – – – – – – – 10001207 – – – – – – – – – – 10001208 – – – – – – – – – – 10001209 – – – – – – – – – – 10001210 – – – – – – – – – – 10001211 – – – – – – – – – –

➂

Reference ➂

➁ ➀

➃

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

11

Rexnord Thomas Flexible Disc Couplings Thomas XTSR71 Adapter Series Coupling The optimized 3-piece design allows for the smallest possible package for an application. The hubs are pilot fitted to the factory assembled center member. The design allows for repeatable installations without special tooling. Additional modifications may be made to reduce coupling weight, or special mountings to make it an economical option on various critical and high speed applications. Common engineered solutions are available such as torque overload protection, electrically insulated, spark resistant and alloy construction. The XTSR71 couplings are designed for spacer type coupling critical applications including API applications. The XTSR71 couplings are API 610, ISO 10441 and ISO 14691 compliant, API 671 when specified, and ATEX II 2GD c T6 certified. Common applications include motor and turbine driven pumps, compressors, fans, synchronized rollers, wire feeders and blowers.

Construction Hubs and center assembly: Carbon steel Bolts: Alloy steel Disc Packs: Stainless steel Coatings Available: Manganese Phosphate provided as standard, other coatings available upon request

General Dimensions (mm) Coupling ➂ Hub* ➂ Hub** Size Max. Bore Max. Bore

726 826 996 1088 1298 1548 1698 1928 2068 2278 2468 2698 2888 3058 3358 3668 3908 4178 4588 4918 5258

42 52 61 74 88 102 118 130 142 155 166 200 220 235 254 280 295 315 355 385 405

52 61 74 88 102 118 130 142 155 166 200 220 235 254 280 295 315 355 385 405 –

A

A2**

B

B2**

Min. C

Max. C

Std. C

G

G2**

95.0 108.0 129.0 140.0 166.0 199.0 220.0 245.4 264.0 290.5 313.0 345.0 381.0 405.0 437.0 482.0 503.0 529.0 608.0 648.0 678.0

108.0 129.0 140.0 166.0 199.0 220.0 245.4 264.0 290.5 313.0 345.0 381.0 405.0 437.0 482.0 503.0 529.0 608.0 648.0 678.0 –

35 42 51 82 95 114 122 135 155 167 190 185 200 191 225 257 249 266 300 320 346

42 51 82 95 114 122 135 155 167 190 185 200 191 225 257 249 266 300 320 346 –

65 77 92 96 115 135 151 161 187 196 209 236 255 257 287 310 311 340 386 408 438

220.0 242.8 301.2 306.6 385.1 461.3 493.4 569.0 597.4 666.5 722.4 774.2 801.6 877.8 914.4 914.4 914.4 914.4 914.4 914.4 914.4

88.9 127.0 127.0 127.0 127.0 139.7 177.8 177.8 203.2 203.2 228.6 254.0 304.8 304.8 304.8 381.0 381.0 381.0 457.2 457.2 457.2

59 73 86 104 123 145 165 182 200 220 236 280 308 332 355 398 419 444 504 545 575

73 86 104 123 145 165 182 200 220 236 280 308 332 355 398 419 444 504 545 575 –

* Reference for small hub ** Reference for large hub

Coupling Size

726 826 996 1088 1298 1548 1698 1928 2068 2278 2468 2698 2888 3058 3358 3668 3908 4178 4588 4918 5258 ➀ ➁ ➂ ➃

12

Max. Kilowatt Per 100 RPM

Max. RPM

Service Factor 1.0

➃ Not Balanced

Balanced

Max. Continuous Torque (Nm)

3.11 5.80 9.71 23.0 37.2 61.9 85.7 116 161 209 274 376 492 545 735 987 1,080 1,340 1,970 2,460 2,970

11,000 9,900 8,800 8,000 7,100 6,300 5,900 5,500 5,200 4,900 4,600 4,300 4,000 3,900 3,700 3,400 3,400 3,300 3,000 2,800 2,700

20,000 18,500 15,000 14,000 12,000 10,000 9,100 8,500 7,800 7,100 6,500 6,000 5,500 5,200 4,600 4,300 4,100 3,900 3,400 3,200 3,100

297 554 927 2,190 3,550 5,910 8,190 11,100 15,400 19,900 26,200 35,900 47,000 52,000 70,200 94,300 103,000 128,000 189,000 235,000 283,000

Peak Overload Torque (Nm)

Weight (kg)

594 1,110 1,850 4,390 7,100 11,800 16,400 22,200 30,700 39,900 52,400 71,900 94,000 104,000 140,000 189,000 205,000 256,000 377,000 470,000 567,000

3.1 5.0 8.4 12.5 20.6 34.6 47.0 62.7 84.9 110.0 143.0 184.0 257.0 274.0 366.0 521.0 536.0 648.0 993.0 1,200.0 1,420.0

➁

Weight Change Per mm of “C” (kg/mm)

0.00311 0.00535 0.00503 0.00966 0.0118 0.0161 0.0214 0.0251 0.0325 0.0378 0.0451 0.0572 0.0716 0.0723 0.0907 0.111 0.111 0.130 0.179 0.210 0.235

WR2 (kg-m2)

WR2 Change Per mm of “C” (kgm2-mm)

Axial Capacity (mm)

0.00364 0.00770 0.0188 0.0336 0.0796 0.189 0.318 0.533 0.840 1.30 1.94 3.30 5.35 6.80 10.4 17.6 20.9 28.1 54.2 76.0 99.9

0.00000214 0.00000492 0.00000667 0.0000144 0.0000268 0.0000530 0.0000827 0.000129 0.000188 0.000268 0.000379 0.000561 0.000771 0.000918 0.00138 0.00202 0.00241 0.00321 0.00497 0.00668 0.00863

±1.3 ±1.5 ±1.8 ±1.3 ±1.6 ±1.8 ±2.0 ±2.3 ±2.5 ±2.7 ±3.0 ±3.2 ±3.5 ±3.7 ±4.0 ±4.4 ±4.7 ±5.0 ±5.5 ±5.9 ±6.3

➁

All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. Weight and WR2 at maximum bore and standard “C” dimension listed. Consult Rexnord for minimum rough bore sizes. XTSR71 couplings meet AGMA Class 9 balance requirements as manufactured with interference fit bore and close fit keyway. If clearance fit and/or setscrews are required, consult Rexnord. NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

➀

Rexnord Thomas Flexible Disc Couplings Thomas XTSR71 Adapter Series Coupling Components List ➂ Standard Spacer Component

➀

➁

Hub

Large Hub

Adapter

10001611 10001612 10001613 10001614 10001615 10001616 10001617 10001618 10001619 10001620 10001621 10001622 10001623 10001624 10001631 10001625 10001626 10001627 10001628 10001629 10001630

10001612 10001613 10001614 10001615 10001616 10001617 10001618 10001619 10001620 10001621 10001622 10001623 10001624 10001631 10001625 10001626 10001627 10001628 10001629 10001630 –

10001131 10001132 10001133 10001134 10001135 10001136 10001137 10001138 10001139 10001140 10001141 10001142 10001143 10001144 10001145 10001146 10001147 10001148 10001149 10001150 10001151

Large Adapter

88.9 mm (3.5")

mm 127 mm 100 mm 111.1 (4.38") (5.0")

140 mm

177.8 mm 190.5 mm 203.2 mm 228.6 mm 180 mm 250 mm (7.0") (7.5") (8.0") (9.0")

Size

726 826 996 1088 1298 1548 1698 1928 2068 2278 2468 2698 2888 3058 3358 3668 3908 4178 4588 4918 5258

➃

➄

10001781 10000871 10000801 10000872 10000873 10000860 – – – – – – 10001782 10000874 10000802 10000875 10000876 10000861 – – – – – – 10001783 – 10000862 10000877 10000878 10000803 10000879 10000863 – – – – 10001784 – – – 10000880 10000804 10000881 10000864 – – – – 10001785 – – – 10000882 10000805 10000883 10000865 – – – – 10001786 – – – – 10000866 10000885 10000806 – – – 10000867 10001787 – – – – – 10000886 10000807 – – – 10000868 10001788 – – – – – 10000887 10000808 10000888 10000889 – 10000869 10001789 – – – – – – – – 10000891 – 10000809 10001790 – – – – – – – – 10000892 – 10000810 10001791 – – – – – – – – – 10000893 10000811 10001792 – – – – – – – – – – 10000812 10001793 – – – – – – – – – – – 10001794 – – – – – – – – – – – 10001795 – – – – – – – – – – – 10001796 – – – – – – – – – – – 10001797 – – – – – – – – – – – 10001798 – – – – – – – – – – – 10001799 – – – – – – – – – – – 10001800 – – – – – – – – – – – – – – – – – – – – – – –

➅

Component

Adapter Hub Hardware Kit

Disc Pack Hardware Kit

Disc Pack

726 826 996 1088 1298 1548 1698 1928 2068 2278 2468 2698 2888 3058 3358 3668 3908 4178 4588 4918 5258

10001591 10001591 10001592 10001593 10001594 10001595 10001596 10001597 10001598 10001599 10001600 10001601 10001602 10001602 10001603 10001604 10001605 10001605 10001606 10001607 10001608

10001561 10001562 10001563 10001564 10001565 10001566 10001567 10001568 10001569 10001570 10001571 10001572 10001573 10001574 10001575 10001576 10001577 10001578 10001579 10001580 10001581

10000091 10000092 10000093 10000094 10000095 10000096 10000097 10000098 10000099 10000100 10000101 10000102 10000103 10000104 10000105 10000106 10000107 10000108 10000109 10000110 10000111

➄

➃ ➁ ➂

➅

➀ Reference ➃

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Reference ➄

13

Rexnord Thomas Flexible Disc Couplings Type AMR AMR couplings are used in heavy-duty, slow to medium speed applications, where high-starting torque, shock loads, torque reversals or continuous alternating torque are present. The open lug type center member provides ample clearance for assembly while minimizing the space required for coupling installation. Construction Hubs: Carbon steel Center Member: Sizes 162 - 750 are cast alloy iron, sizes 800 and larger are cast steel Bolts: Alloy steel Disc Packs: Tomaloy Tpack (sizes 225 - 750) Coatings Available: Consult Rexnord Other disc pack materials such as stainless steel, Monel and Inconel are available; please consult Rexnord. Misalignment: 1/3° per disc pack General Dimensions (mm) Coupling Size

Rough Bore

Max. Bore

➅

A

B

C

F

G

162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925 1000 1100 1200 1300 1550

– – – – – – – – – 68 68 94 108 125 132 138 151 165 178 191 203 216

50 58 70 84 97 110 120 130 140 146 166 176 205 224 241 250 267 290 314 339 376 394

116 146 152 175 206 232 256 279 302 341 381 425 481 524 568 603 654 718 768 848 914 997

44 54 64 73 86 95 102 108 114 127 140 152 178 184 197 210 229 241 260 279 305 368

67 76 76 89 105 116 132 141 151 173 196 215 245 268 289 309 337 369 394 433 465 494

155 184 204 235 277 306 336 357 379 427 476 519 601 636 683 729 795 851 914 991 1075 1230

70 92 99 114 138 152 165 178 189 213 240 262 298 321 349 368 403 445 470 514 572 660

Coupling Size

➀ ➁ ➂ ➃ ➄ ➅ ➆

14

➃

Max. Kilowatt per 100 RPM Service Factor 1.0

➂

Max. RPM

Max. Continuous Torque (Nm)

➆

Peak Overload Torque (Nm)

➁

Weight (kg)

➁➄

WR2 (kg-m2)

162 6.8 2,500 648 778 3.6 0.005 200 13 2,500 1,245 1,494 7.3 0.017 225 18.4 2,500 1,758 2,110 9.1 0.022 262 24.9 2,500 2,375 2,850 14.5 0.047 312 28 2,500 2,670 3,204 21.3 0.107 350 62.4 2,300 5,961 7,153 32.2 0.193 375 93.9 2,200 8,968 10,762 41.8 0.300 425 104 2,000 9,935 11,921 53.1 0.465 450 161 1,900 15,367 18,441 65.4 0.658 500 237 1,800 22,663 27,196 96.2 1.241 550 325 1,800 31,052 37,262 131.7 2.113 600 424 1,800 40,514 48,617 176.6 3.511 700 540 1,500 51,535 61,842 266.5 6.671 750 763 1,500 72,808 87,369 327.8 9.919 800 962 1,200 91,869 110,243 425.9 16.27 850 1063 1,100 101,456 121,748 522.1 22.12 925 1515 1,000 144,647 173,576 635.6 29.85 1000 1758 900 167,893 201,472 863 50.33 1100 2419 800 230,978 277,173 1,035 71.69 1200 2604 650 248,611 298,334 1,357 115.3 1300 2822 600 269,474 323,369 1,771 164.1 1550 3693 600 352,676 423,211 2,338 260.1 All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. Weight and WR 2 at maximum bore. Consult Rexnord if balancing is required. Consult Rexnord for minimum rough bore on size 162-450. Special hub available for size 600 with 6 ¾ max. bore. Consult Rexnord. Straight bores with no keyway require a special material hub. Consult Rexnord. The peak overload torque is not an alternating torque limit. NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

➀

Axial Capacity (mm)

±0.91 ±0.91 ±0.91 ±1.09 ±1.29 ±1.42 ±1.57 ±1.70 ±1.82 ±2.02 ±2.33 ±2.59 ±2.92 ±3.17 ±3.45 ±3.65 ±3.96 ±4,36 ±4,64 ±5,15 ±5,53 ±6,14

Rexnord Thomas Flexible Disc Couplings Flywheel Adapter Type CMR CMR couplings are used in heavy-duty, slow to medium speed applications, where high-starting torque, shock loads, torque reversals or continuous alternating torque are present. The open lug type center member provides ample clearance for assembly while minimizing the space required for coupling installation. The CMR couplings are designed with a flywheel adapter plate which bolts directly to the flywheel of an engine or compressor. The adapters are made to fit accurately into the recess in the flywheel, and external strains on the crankshaft resulting from the misalignment of the driven equipment is minimized.

Construction Hubs: Carbon steel Center Section: Sizes 162-750 are cast alloy iron, Sizes 800 and above are cast steel Bolts: Alloy steel Disc Packs: Tomaloy Tpack (225-750 size) Coatings: Consult Rexnord Other disc pack materials such as stainless steel, Monel and Inconel are available; please consult Rexnord. Misalignment: 1/3° per disc pack

Flywheel Adapter Information Adapters can be furnished to accommodate virtually any flange design. Where possible, the user should select dimensions from the tables below, as these represent industry standards and thus are the most economical selection. Note that most sizes are available either with SAE bolting or Thomas heavy-duty bolting. Available Adapters Coupling Size

Adapters Available in Shaded Sizes (mm)

Adapter Tolerance

215.900 241.300 263.525 314.325 352.425 406.400 466.725 517.525 571.500 673.100 733.425 215.849 241.249 263.474 314.274 352.374 406.349 466.674 517.449 571.424 673.024 733.349

162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850

Ava ila

ble I

nT hes

eS

ize

s

Sizes 925 to 1550 - Adapting dimensions available upon request. NOTE: values are metric conversions of standard SAE Inch adapter diameters. Bolting Standard A Diameter (mm)

215.90 241.30 263.65 314.45 352.55 406.40 466.85 517.65 571.50 673.10 733.55

Light-Duty SAE Bolting

Heavy-Duty Thomas Bolting

Bolt Circle

No. Holes

Hole Dia.

Bolt Circle

No. Holes

Hole Dia.

200.2 222.3 244.4 295.2 333.3 – 438.2 489.0 543.1 641.4 692.2

6 8 6 8 8 – 8 8 6 12 12

8.6 8.6 10.4 10.4 10.4 – 13.5 13.5 16.8 16.8 19.8

190.5 219.0 241.3 292.1 317.5 365.3 425.5 469.9 520.7 622.3 682.8

8 8 8 8 8 8 8 8 8 12 12

10.4 11.9 11.9 13.5 16.8 19.8 19.8 23.1 26.2 26.2 26.2

NOTE: values are metric conversions of standard SAE Inch series diameters, bolt circle diameters and bolt holes.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

15

Rexnord Thomas Flexible Disc Couplings Flywheel Adapter Type CMR General Dimensions (mm) Coupling Size

Rough Bore

➆

➁ Max. Bore

Min. “A” Dia.

B

C

D

E

F

G

– – – – – – – – – 68 68 94 108 125 132 138 151 165 178 191 203 216

50 58 70 84 97 110 120 130 140 146 166 176 205 224 241 250 267 290 314 339 376 394

158,8 187,5 193,5 215,9 241,3 276,4 301,8 333,2 374,7 406,4 457,2 466,9 517,7 609,6 650,7 685,5 733,6 803,1 847,9 952,5 1013 1107,9

44 54 64 73 86 95 102 108 114 127 140 152 178 184 197 210 229 241 260 279 305 368

84 99 99 113 135 149 168 181 194 222 251 276 316 343 375 400 438 471 503 548 592 603

116 146 152 175 206 232 256 279 302 341 381 425 481 524 568 603 654 718 769 861 914 997

7,9 9,7 9,7 11,2 12,7 12,7 14,2 15,7 17,5 19,1 22,4 25,4 25,4 28,4 31,8 31,8 35,1 41,1 44,5 50,8 53,8 53,8

128 153 163 186 221 244 270 289 308 349 391 428 494 527 572 610 667 712 763 827 897 971

70 92 99 114 138 152 165 178 189 213 240 262 298 321 349 368 403 445 470 514 562 660

162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925 1000 1100 1200 1300 1550

Coupling Size

162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925 1000 1100 1200 1300 1550 ➀ ➁ ➂ ➃ ➄ ➅ ➆ ➇

16

Max. Kilowatt per 100 RPM Service Factor 1.0

6.8 13 18 25 28 62 94 104 161 237 325 424 540 763 962 1063 1515 1758 2419 2604 2822 3693

➂ Max. RPM

Max. Continuous Torque (Nm)

2,500 2,500 2,500 2,500 2,500 2,300 2,200 2,200 1,900 1,800 1,800 1,800 1,500 1,500 1,200 1,100 1,000 900 800 650 600 600

648 1,245 1,758 2,375 2,670 5,961 8,968 9,935 15,367 22,663 31,052 40,514 51,535 72,808 91,869 101,456 144,647 167,893 230,978 248,611 269,474 352,676

Peak Overload Torque (Nm)

➇

➄➅ Weight (kg)

➄ WR2 (kg-m2)

➀ Axial Capacity

778 1,494 2,110 2,850 3,204 7,153 10,762 11,921 18,441 27,196 37,262 48,617 61,842 87,369 110,243 121,748 173,576 201,472 277,173 298,334 323,369 423,211

3.6 7.3 9.1 14.5 21.3 32.2 41.8 53.1 65.4 96.2 131.7 176.6 266.5 327.8 425.9 522.1 635.6 749.1 885.3 1157.7 1507.3 1861.4

0,005 0,017 0,022 0,047 0,107 0,193 0,300 0,465 0,658 1,241 2,113 3,511 6,671 9,919 16,269 22,121 29,845 45,645 72,272 119,088 165,904 245,784

±0.91 ±0.91 ±0.91 ±1.09 ±1.29 ±1.42 ±1.57 ±1.70 ±1.82 ±2.02 ±2.33 ±2.59 ±2.92 ±3.17 ±3.45 ±3.65 ±3.96 ±4,36 ±4,64 ±5,15 ±5,53 ±6,14

All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. Straight bores with no keyway require special material. Maximum speeds are based on smallest available adapter O.D. For higher speeds, consult Rexnord. Flywheel bolts are not supplied with coupling. Weight and WR2 at maximum bores and minimum adapter diameter. Special hub available for size 600 with 6.75 in. max. bore. Consult Rexnord. Consult Rexnord for minimum rough bore on sizes 162-450. The peak overload torque is not an alternating torque limit.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Flexible Disc Couplings Type BMR Type BMR couplings are recommended for heavy-duty motor and engine driven service such as paper machines, grinding mills, dredges, and marine propulsion. The BMR uses a solid intermediate shaft which can be furnished complete by Rexnord or fabricated by the user. Hubs are carbon steel, shafting is hot or cold-rolled steel, and disc packs are Tomaloy Tpack (225750 sizes, stainless steel also available). Misalignment: 1/3° per disc pack. General Dimensions (mm) Coupling Size

Rough Bore

Max. Bore

➁➃

A

B

C

F

G

162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925 1000 1100 1200 1300 1550

– – – – – – – – – 68 68 94 108 125 132 138 151 165 178 191 203 216

50 58 70 84 97 110 120 130 140 146 166 176 205 224 241 250 267 290 314 339 376 394

116 146 152 175 206 232 256 279 302 341 381 425 481 524 568 603 654 718 768 848 914 997

44 54 64 73 86 95 102 108 114 127 140 152 178 184 197 210 229 241 260 279 305 368

10 11 11 13 16 17 21 22 22 27 32 35 40 44 46 51 57 62 64 70 72 77

128 153 163 186 221 244 270 289 308 349 391 428 494 527 572 610 667 712 763 827 897 971

70 92 99 114 138 152 165 178 189 213 240 262 298 321 349 368 403 445 470 514 562 660

➂

Max. Kilowatt per 100 RPM Max. RPM

Max. Continuous Torque (Nm)

Peak Overload Torque (Nm)

➁ Weight (kg)

➁ WR2 (kg-m2)

➀ Axial Capacity (mm)

1,800 1,800 1,800 1,800 1,800 1,800 1,800 1,800 1,500 1,500 1,500 1,200

648 1,245 1,758 2,375 2,670 5,961 8,968 9,935 15,367 22,663 31,052 40,514

778 1,494 2,110 2,850 3,204 7,153 10,762 11,921 18,441 27,196 37,262 48,617

5.9 11.4 13.2 19.5 35.9 48.1 63.1 79.0 96.7 132.6 190.7 249.7

29 81 105 214 566 934 1,470 2,320 3,085 5,500 9,850 15,700

±0,91 ±0,91 ±0,91 ±1,09 ±1,29 ±1,42 ±1,57 ±1,70 ±1.82 ±2.0 ±2.33 ±2.59

Coupling Size

Shaft Diameter (mm)

Max. Kw/100 for Given Shaft Dia.

Max. Allowable Shaft Wt. (kg)

Max. Span (mm) at Max. Allow Shaft Wt.

162 200 225 262 312 350 375 425 450 500 550 600

41 51 57 64 73 89 95 108 114 127 140 152

5.0 9.9 13.9 17.7 25 56 73 93 115 169 219 302

27 34 39 81 106 132 187 228 271 365 466 588

2591 2108 1930 3251 3226 2718 3353 3175 3353 3683 3886 4115

Coupling Size

162 200 225 262 312 350 375 425 450 500 550 600

Service Factor 1.0

6.8 13 18 25 28 62 94 104 161 237 325 424

BMR Shafting Selection Table

➀ ➁ ➂ ➃

Max. Span (mm) For Various RPM 1800

1200

900

720

1372 1524 1626 1702 1829 2007 2083 2210 2286 2413 2515 2642

1676 1854 1930 2083 2235 2464 2540 2718 2794 2946 3099 3226

1930 2108 1930 2413 2591 2718 2946 3124 3226 3404 3556 3734

2159 2108 1930 2692 2896 2718 3302 3175 3353 3683 3886 4115

All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modifications or the addition of end-float restricting devices. Weight and WR2 at maximum bore and minimum “L”. Consult Rexnord for minimum rough bore on sizes 162-450. Straight bores with no keyway require special material. NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

17

Rexnord Thomas Flexible Disc Couplings Series 44 Flywheel Adapter Type The Series 44 is an all-steel fully machined flywheel adapter style coupling. It is used in heavy-duty applications where high starting torque, shock loads, torque reversals or alternating torques are present. This coupling is similar to the type CMR, but with the following benefits: Dimension “C” and spool are adjustable to meet specific spacing requirements and/or to make adjustment to torsional characteristics. The all-steel design provides a higher maximum continuous and peak overload torque rating. Fully-machined components offer a higher operating speed and balancing level.

Construction Hubs and Center Assembly: Carbon Steel Bolts: Alloy Steel Disc Packs: Tomaloy Tpack (225-750 Size) Coatings Available: Black Oxide, Zinc, Cadmium Other disc pack materials such as stainless steel, Monel and Inconel are available; please consult Rexnord. Misalignment: 1/3° per disc pack When specified, Series 44 couplings meet all requirements of API 610 or API 671. If application requires API specification, please consult Rexnord.

General Dimensions (mm) Coupling Size

Max. Bore

Min. “A” Dia.

B

Std. C

Min. C

D

E

F (Ref.)

G

N

350 375 425 450 500 550 600 700 750 800 850 925 1000

110 120 130 140 146 166 176 205 224 241 250 267 290

276 302 333 375 406 457 467 518 610 651 695 734 803

95 102 108 114 127 140 152 178 191 210 222 241 267

149 168 181 194 222 251 276 316 343 375 400 438 471

131 145 156 170 191 217 238 271 294 322 345 370 430

221 246 267 287 327 367 406 464 503 546 584 635 699

13 14 16 18 19 22 25 25 28 32 32 35 41

245 270 289 308 349 391 429 494 533 584 622 679 738

149 165 178 189 213 240 260 298 321 346 368 400 438

14 15 16 18 20 23 25 30 32 34 36 38 43

Coupling Size

350 375 425 450 500 550 600 700 750 800 850 925 1000

➂ Max. RPM

Max. Kilowatt Per 100 Service Factor 1.0

68.7 100.6 111.8 161.0 237.5 368.4 465.3 591.4 773.4 1034.0 1329.0 1827.1 2097.7

Not Balanced

Balanced

Max. Continuous Torque (Nm)

3,200 3,000 2,800 2,700 2,500 2,300 2,150 1,950 1,850 1,750 1,600 1,500 1,500

10,500 9,400 8,700 8,100 7,100 6,300 5,700 500 4,600 4,300 3,900 3,600 3,250

6,562 9,604 10,677 15,380 22,682 35,187 44,440 56,478 73,861 98,749 126,924 174,494 200,345

A

➃ Peak Overload Torque (Nm)

➄ Weight (kg)

Weight Change Per mm of “C” (kg)

➄ WR2 (kg-m2)

WR2 Change Per mm of “C” (kg-m2)

➀ Axial Capacity (mm)

13,124 19,208 21,354 30,760 45,364 70,374 88,880 112,956 147,722 197,498 253,848 348,988 400,690

23 32 42 54 80 118 148 222 291 365 443 585 751

0.38 0.47 0.64 0.67 1.04 1.31 1.52 2.21 2.44 2.52 3.03 3.85 3.88

0.17 0.29 0.46 0.72 1.27 2.37 3.46 6.56 10.68 15.85 21.78 33.29 50.87

0.0553 0.0829 0.135 0.156 0.313 0.495 0.705 1.19 1.65 2.30 2.30 4.61 5.83

±1.42 ±1.57 ±1.70 ±1.82 ±2.02 ±2.33 ±2.59 ±2.92 ±3.17 ±3.45 ±3.65 ±3.96 ±4.36

➀ Thomas disc couplings meet NEMA MG1-14.37, 1-20.81, & 1-21.81 specifications without the addition of end-float restricting devices. ➁ Flywheel fasteners are not supplied with this coupling. Contact equipment manufacturer for this hardware and tightening instructions. ➂  Maximum speeds are based on use with all standard available adapters. For larger sizes or higher speeds, please consult Rexnord. ➃ The peak overload torque rating is an infrequent torque overload limit and not an alternating or vibratory torque limit. ➄ Weight and WR2 values are based on maximum bores and minimum adapter diameters listed above.

18

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Flexible Disc Couplings Series 44 Flywheel Adapter Type Flywheel to Adapter Bolt Patterns Standard A Diameter (mm)

Light-Duty SAE Bolting Bolt Circle

No. Holes

Heavy-Duty Thomas Bolting Hole Dia.

Bolt Circle

No. Holes

Hole Dia.

314.5 295.2 8 10.4 292.1 8 13.5 352.6 333.3 8 10.4 317.5 8 16.8 406.4 N/A N/A N/A 365.3 8 19.8 466.9 438.2 8 13.5 425.5 8 19.8 517.7 489.0 8 13.5 469.9 8 23.1 571.5 543.1 6 16.8 520.7 8 26.2 673.1 641.4 12 16.8 622.3 12 26.2 733.6 692.2 12 19.8 682.8 12 26.2 All dimensions listed are in millimeters and bolt holes are equally spaced. NOTE: values are metric conversions of standard SAE inch series diameters, bolt circle diameters and bolt holes.

Flywheel Adapter Information* Adapters can be furnished to accommodate most flange designs. Where possible, the user should select dimensions from the tables shown, as these represent industry standards that are more economical and readily available. Note that most sizes can be supplied with either SAE light-duty bolting or Thomas heavy-duty bolting. Please contact Rexnord for custom designs.

Coupling Size

Minimum Adapter “A” Dia.

350

276.4

375

301.8

425

333.3

450

374.7

500

406.4

550

457.2

600

466.9

700

517.7

750

609.6

800

650.8

850

695.5

925

733.5

1000

803.2

➀ Standard Available Adapter Diameters (mm) - Actual OD Tolerance as Listed 314.3

352.4

406.4

466.7

517.5

571.5

673.1

733.4

673.0

733.3

314.3

352.4

406.3

466.7

517.4

571.4

WT. = 1.76 WR2 = 0.094 Wt. = 0.69 WR2 = 0.016

Wt. = 3.75 WR2 = 0.210 Wt. = 2.91 WR2 = 0.078 Wt. = 1.27 WR2 = 0.037

Wt. = 6.95 WR2 = 0.407 Wt. = 6.49 WR2 = 0.208 Wt. = 5.22 WR2 = 0.180 Wt. = 2.67 WR2 = 0.102 Wt. = 0 ➀ WR2 = 0

Wt. = 11.08 WR2 = 0.644 Wt. = 11.12 WR2 = 0.429 Wt. = 10.35 WR2 = 0.425 Wt. = 8.35 WR2 = 0.374 Wt. = 6.17 WR2 = 0.295 Wt. = 1.21 WR2 = 0.065 Wt. = 0 ➀ WR2 = 0

Wt. = 14.98 WR2 = 0.985 Wt. = 15.48 WR2 = 0.694 Wt. = 15.21 WR2 = 0.720 Wt. = 13.76 WR2 = 0.701 Wt. = 12.03 WR2 = 0.650 Wt. = 8.08 WR2 = 0.481 Wt. = 7.81 WR2 = 0.473 Wt. = 0 ➀ WR2 = 0

Wt. = 19.57 WR2 = 0.985 Wt. = 20.66 WR2 = 1.077 Wt. = 20.88 WR2 = 1.141 Wt. = 20.11 WR2 = 1.173 Wt. = 18.93 WR2 = 1.162 Wt. = 16.16 WR2 = 1.081 Wt. = 17.03 WR2 = 1.158 Wt. = 9.22 WR2 = 0.684

Wt. = 33.73 WR2 = 2.500 Wt. = 33.78 WR2 = 2.608 Wt. = 33.60 WR2 = 2.778 Wt. = 36.77 WR2 = 3.081 Wt. = 28.97 WR2 = 32.607 Wt. = 14.26 WR2 = 1.468 Wt. = 5.77 WR2 = 0.631

Wt. = 43.72 WR2 = 3.838 Wt. = 45.26 WR2 = 4.22 Wt. = 49.94 WR2 = 4.713 Wt. = 42.22 WR2 = 4.248 Wt. = 29.15 WR2 = 3.310 Wt. = 22.34 WR2 = 2.682 Wt. = 10.62 WR2 = 1.355 Wt. = 0 ➀ WR2 = 0

No industry standards exist for adapters to fit couplings this size or larger. Consult Rexnord.

* Weight adder values are given in kg. WR2 values are given in kg-m2. ➀ Wt. and WR2 is zero if the listed minimum adapter “A” diameter is the same as complete coupling calculated values in general dimension tables on page 18. NOTE: Add Wt. and WR2 values listed in table to the weight and inertia values provided on page 18 for given size to calculate actual values based on selected adapter size.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

19

Rexnord Thomas Flexible Disc Couplings Type SN-GA Replaces troublesome gear couplings on pulp and paper applications. The Thomas one-piece, factory-torqued assembly is easy to install. This coupling is designed to bolt directly to existing rigid hubs using the gear coupling bolts. Axial shims are supplied for minor axial positioning adjustment.

Construction Hubs and Center Assembly: Carbon steel Bolts: Alloy steel Disc Packs: Stainless Tpack Coatings Available: Consult Rexnord Other disc pack materials such as Tomaloy, stainless steel, Monel and Inconel are available; please consult Rexnord. Misalignment: 1/3° per disc pack Available Adapters Gear Coupling (Falk)

Thomas Coupling

#1½ #2 #2½ #3 #3½ #4 #4½ #5 #5½ #6 #7 (1015) (1020) (1025) (1030) (1035) (1040) (1045) (1050) (1055) (1060) (1070)

226 262 312 350 375 425 450 500T 550T 600T 700T 750T 800T 850T

Ava ilabl e In

The se

Size

s

For other sizes, please consult Rexnord.

Coupling Size

226 262 312 350 375 425 450 ➂ 500T 550T 600T 700T 750T 800T 850T

Max. Kilowatt per 100 RPM Service Factor 1.0

16.9 26.0 33.3 41.5 92 139 161 275 318 486 649 746 1074 1309

Max. Continuous Torque (Nm)

➁ Peak Overload Torque (Nm)

A

L

Min. MD

N

➀ Axial Capacity (mm)

1611 2486 3186 3966 8733 13315 15365 26257 30414 46435 62026 71290 102586 125069

3222 4971 6372 7931 17467 26629 30731 52513 60828 92870 124052 142581 205172 250138

148 170 198 222 246 267 287 327 367 406 464 503 546 584

102 114 130 135 168 165 171 184 197 232 235 248 260 260

413 438 508 562 660 667 724 762 851 933 1029 1092 – –

14.7 11.9 12.7 13.7 15.0 15.7 19.8 19.8 23.1 24.9 30.5 32.3 34.0 35.6

±0.91 ±1.09 ±1.29 ±1.42 ±1.57 ±1.70 ±1.82 ±2.00 ±2.33 ±2.59 ±2.92 ±3.17 ±3.45 ±3.65

➀ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. ➁ The peak overload torque is not an alternating torque limit. ➂ Available with Tpack for new couplings, not retrofittable in size 450.

20

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Flexible Disc Couplings Floating Shaft Types SN, SF, SV Floating shaft couplings are used to connect units which are relatively far apart. Such arrangements are particularly suited to transmit power into areas where moisture, dust or corrosive conditions would adversely affect the driving machinery. Floating shaft couplings’ operating speeds are dependent upon the length of span required. Refer to the speed/span table for speed recommendations. In addition, special balancing may be required for high-speed service or for extended shaft lengths. Consult Rexnord for intended applications at speeds not covered in the table. The SN, SF and SV type couplings are furnished with stainless steel disc packs unless otherwise specified.

Type SN

Type SF

Type SV

Full-Floating Shaft Coupling

Semi-Floating Shaft Coupling

Vertical Floating Shaft Couplings

Type SN couplings use a tubular center shaft, fabricated complete by Rexnord. Typical applications include cooling tower fan drives, paper machinery, printing presses, pumps and compressors.

Type SF couplings are a tubular shaft design with a stub shaft and bearing journal replacing the half-coupling on one end. They are typically used in tandem with the Type SN or Type SV where spans are too long for a single section of shafting.

Type SV couplings are similar to the Type SN except that the lower half-coupling is modified to support the weight of the floating shaft. Typical applications include fresh-water pumps, sewage pumps, and marine cargo pumps. They may be used in tandem with the Type SF where spans are too long for a single shaft.

Connected shafts should be rigidly supported and long shaft overhang should be avoided. The tubular coupling shaft MUST NOT be supported with a bearing. They may be operated vertically if length does not exceed 36 in.

Corrosion Resistant Materials Types SN, SV and SF couplings are particularly suited to applications involving wet or corrosive conditions, for this reason they are all furnished with 300 series stainless steel disc packs. For extremely corrosive environments, 316 stainless steel, Inconel 625 or Monel disc pack materials are available on request. As standard, these couplings are available in the following material classes. NOTE: The stub shaft on the SF coupling is always furnished as unplated carbon steel in classes A, B, C and D. Couplings may be painted with acid and alkali resistant paints or coating besides the corrosion resistant classes listed. CLASS A – All steel B – All steel – zinc plated C – All steel – zinc plated w/stainless steel hardware D – Stainless steel except for zinc plated hubs E – All 300 series stainless steel Floating Shaft Couplings Types SN, SV and SF center members are of tubular construction, requiring special considerations for the operating speed and span length. The graph to the right may be used as a guide when determining whether it is desirable to balance the center member. The standard procedure for balancing of SN, SV and SF couplings includes straightening of the tubular shaft prior to balancing. Many couplings of this type operate relatively near to the lateral resonant frequency of the coupling center member, and special balancing techniques are often required. For speeds 1800 RPM and under see page 4 for balancing recommendations. Consult Rexnord for any application with speed in excess of 1800 RPM.­

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

21

Rexnord Thomas Floating Shaft Coupling Types SN, SF, SV

General Dimensions ➄ Coupling SIze

SN

50 62 75 100 125 162 200 226* 262 312 350 375 425 450* 500T 550T 600T 700T 750T 800T 850T 925T

• • • • • • • • • • • • • • • • • • • • • •

Coupling Type SV

• • • • • • • • • • • • • • • • • • •

SF ➇

• • • • • • • • • •

Max. Bore

A

B

D

E

➂ T

➂ U

F

G

N

NL

16 19 22 29 35 48 57 67 80 92 102 114 121 130 137 152 165 191 203 222 235 257

51 62 68 82 98 114 138 148 170 198 222 246 267 287 327 367 406 464 503 546 584 635

22 28 29 35 41 48 54 67 76 86 95 102 108 114 127 140 152 178 191 210 222 241

– – – 95 108 114 140 143 156 162 191 203 229 – – – – – – – – –

– – – 44 54 67 73 86 95 102 114 121 127 – – – – – – – – –

– – – 24 30 37 43 49 56 62 75 87 94 – – – – – – – – –

– – – 22 29 35 41 48 54 60 73 86 92 – – – – – – – – –

– – – 140 162 181 213 229 251 264 305 324 356 – – – – – – – – –

25 30 37 43 52 70 83 96 114 133 149 165 178 189 213 240 260 298 321 346 368 400

6.1 8.1 8.4 11.4 13.2 13.7 14.5 14.7 11.9 12.7 13.7 15.0 15.7 19.8 19.8 23.1 24.9 30.5 32.3 34.0 35.6 38.1

– – – 3.3 3.8 4.1 4.1 4.6 5.6 6.4 7.4 8.4 9.4 10.2 11.9 13.5 15.2 17.8 19.6 21.3 22.9 25.4

➄ Coupling Size

Max. Continuous Torque (Nm)

Peak Overload Torque (Nm)

50 62 75 100 125 162 200 226* 262 312 350 375 425 450* 500T 550T 600T 700T 750T 800T 850T 925T

19 33 46 93 252 480 972 1611 2486 3186 3966 8733 13315 15365 26257 30414 46435 62026 71290 102586 125069 165629

38 66 93 185 504 960 1943 3222 4971 6372 7931 17467 26629 30731 52513 60828 92870 124052 142581 205172 250138 331257

➃ Weight (kg) SN, SV

SF

0.499 0.726 1.09 2.22 3.41 4.99 9.53 12.08 17.52 28 39 58 79 94 109 153 201 326 400 518 645 826

– – – 1.63 2.95 4.77 4.99 11.35 16.34 25 35 50 – – – – – – – – – –

Weight Change Per mm of “L” (kg)

0.0100 0.0136 0.0236 0.0345 0.0431 0.0590 0.132 0.150 0.186 0.213 0.236 0.440 0.717 0.717 1.08 1.08 1.53 2.07 2.07 2.47 2.72 3.13

➃ WR2 (kg-m2) SN, SV

SF

0.147 0.352 0.557 1.55 3.57 7.91 9.38 30.8 63.9 133.6 236 416 717 982 1452 2461 4251 8195 11799 18802 26877 42046

– – – 0.908 2.08 4.4 4.98 17.9 39 85.3 140 247 – – – – – – – – – –

➁ Min. L SN

SF

102 114 121 146 159 171 191 210 210 248 292 324 337 381 394 457 470 559 597 660 914 914

– – – 305 310 335 394 419 457 495 521 589 640 – – – – – – – – –

WR2 Change Per mm of “L” (kg-m2-m)

➀➅ Type SN Axial Capacity (mm)

0.0194 0.0470 0.134 0.246 0.505 1.64 4.17 6.10 11.91 16.38 23.06 54.36 118 118 305 305 678 894 894 1527 2040 3081

±0.58 ±0.71 ±0.81 ±0.96 ±1.16 ±0.91 ±0.91 ±0.91 ±1.09 ±1.29 ±1.42 ±1.57 ±1.70 ±1.82 ±2.02 ±2.33 ±2.59 ±2.92 ±3.17 ±3.45 ±3.65 ±3.96

➀ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. ➁ Shorter “L” requires special construction. Consult Rexnord. ➂ Shaft tolerances: 5/16 to 1-1/2 + .000 - .0005. 1-5/8 to 3-11/16 .000 - .001. Key furnished with standard keyway in SF stub shaft. ➃ Weight and WR2 at max. bore and min. “L” dimension. ➄ T suffix to coupling size indicates thin flange design. Consult Rexnord for larger sizes. ➅ Types SF and SV end-float is one half ± value shown for type SN. ➆ Maximum span (L) in inches for various speeds - For SN & SV ➇ Consult Rexnord for larger sizes. *Not available with Tpack. NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request. 22

Rexnord Thomas Floating Shaft Coupling Types SN, SF, SV Maximum Span at Given RPM Coupling Size

3600 RPM

3000 RPM

50 Consult 62 Rexnord 75 41 45 100 125 47 51 162 54 59 200 60 66 226 64 70 262 71 77 312 75 82 350 79 87 375 87 95 425 90 99 450* 90 99 500 104 113 550T 600T 700T Consult 750T Rexnord 800T 850T 925T * Not available with Tpack

1800 RPM

1500 RPM

1200 RPM

1000 RPM

900 RPM

750 RPM

720 RPM

600 RPM

500 RPM

43 50 56 57 64 75 85 90 100 107 113 123 128 128 147 147 165 164 164 179 187 200

47 54 61 64 72 84 93 99 110 117 123 135 141 141 161 161 180 179 179 196 205 220

52 61 68 71 81 94 104 112 123 130 138 151 157 157 180 180 202 200 200 219 229 245

56 67 75 78 88 103 114 122 135 143 151 165 172 172 197 197 221 219 219 240 251 269

56 70 79 82 93 109 120 128 142 151 159 174 182 182 207 207 233 231 231 252 265 284

56 75 86 91 103 119 132 141 156 165 174 191 199 199 227 227 255 253 253 276 290 311

56 75 88 93 105 122 135 144 160 173 178 195 203 203 232 232 260 258 258 282 296 317

56 75 94 102 114 133 147 157 173 185 195 213 222 222 254 254 285 283 283 309

56 75 94 102 114 133 161 172 191 203 213 234 244 244 279 279 312 310 Consult Rexnord

Type SN Adjustable Type SN adjustable couplings were developed as emergency replacements for standard Type SN couplings and are available from stock in most sizes required for cooling tower applications. Each shaft may be adjusted through a four-inch length range, using a special compression bushing to lock the shaft in place once the length is set.

General Dimensions (mm) Coupling Size

Max. Bore

A

B

G

H

Min. “L”

Adjustment Range

➁ Weight (kg)

Weight Change Per mm of “L” (kg)

➁ WR2 (kg-m2)

162 48 114 48 70 14 362 101.6 8.6 0.06 0.0108 200 57 138 54 83 14 384 101.6 13.6 0.13 0.0234 226 67 148 67 96 15 439 101.6 19.5 0.15 0.0442 262 79 170 76 114 12 480 101.6 27.7 0.19 0.0741 ➀ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. ➁ Weight and WR2 at maximum bore.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

WR2 Change per mm of “L” (kg-m2)

Axial Capacity (mm)

0.0640 0.164 0.240 0.469

±0.91 ±0.91 ±0.91 ±1.09

➀

23

Rexnord Thomas Single-Flexing Disc Couplings Type ST ST couplings are designed for applications which require the coupling to support a substantial radial load while accommodating angular misalignment. Typical installations include units where one shaft is fully supported in its own bearings and the other shaft is single-bearing supported. The radial load is transmitted through the coupling to the inner bearing of the other shaft. Belt drives can be designed to utilize this type of coupling to eliminate a jack shaft bearing and transfer radial loading directly to a machine bearing. Such arrangements are economical and space saving. See the sketches to the right. Construction Hubs: Carbon steel Bolts: Alloy steel Disc Packs: Tomaloy Tpack not available Coatings Available: Contact Rexnord. Other disc pack materials such as stainless steel, Monel and Inconel are available; please consult Rexnord. NOTE: Single-flexing couplings cannot accommodate parallel misalignment. They are not suitable for connecting equipment where both shafts are held rigidly in their own bearings. General Dimensions (mm) Coupling Size

➆ Rough Bore

Max. Bore

A

B

C

F

G

162 200 225 262 312 350 375 425 450 500 550 600 700 750 800

– – – – – – – – – 68 68 94 108 125 132

41 51 57 67 79 89 95 108 114 127 140 152 178 191 203

116 146 152 175 206 232 256 279 302 341 381 425 481 524 568

44 54 64 73 86 95 102 108 114 127 140 152 178 184 197

67 76 76 89 105 116 132 141 151 173 196 215 245 268 289

155 184 203 235 276 306 333 357 379 427 475 519 600 635 683

70 92 99 114 138 152 165 178 189 213 240 262 298 321 349

Max. Kilowatt per 100 RPM

Coupling Size

Max. Radial Load (kg)

➂ Col. 1

➃ Col. 2

➄ Col. 3

➂ Col. 4

➃ Col. 5

➄ Col. 6

162 200 225 262 312 350 375 425 450 500 550 600 700 750 800

68 102 154 236 318 409 568 681 817 1090 1453 1816 2497 2951 3496

0.6 1.1 1.6 2.8 4.5 6.4 9.8 12.7 16.3 25 37 51 79 104 133

0.8 1.6 2.2 4.0 6.3 8.9 13.7 17.8 23 35 51 72 111 145 185

1.0 2.0 2.8 5.1 8.0 11.5 17.7 23 29 45 65 92 142 187 238

0.3 0.5 0.7 1.4 2.2 3.1 4.9 6.4 8.1 12.6 18.3 26 40 52 66

0.4 0.7 1.1 1.9 3.1 4.5 6.9 8.9 11.4 17.5 26 36 55 73 93

0.5 1.0 1.4 2.5 4.0 5.7 8.8 12.2 14.6 23 33 46 71 94 119

➀ ➁ ➂ ➃ ➄ ➅ ➆

24

Smooth

Pulsating

Max. RPM

➅ Max. Continuous Torque (Nm)

➅ Peak Overload Torque (Nm)

➁ Weight (kg)

➁ WR2 (kg-m2)

➀ Axial Capacity (mm)

2,500 2,500 2,500 2,500 2,500 2,300 2,200 1,900 1,500 1,500 1,500 1,200 1,100 1,000 900

99 192 271 484 761 1,089 1,683 2,181 2,779 4,293 6,191 8,756 13,558 17,851 22,596

149 288 407 725 1,141 1,638 2,531 3,276 4,169 6,440 9,287 13,106 20,336 26,776 33,894

3.2 6.4 6.8 10.4 18.6 25.4 32.2 42.2 49.9 72.6 104.4 136.2 199.8 267.9 317.8

0.00469 0.0135 0.0173 0.0352 0.0908 0.152 0.240 0.381 0.498 0.908 1.64 2.46 5.27 7.91 11.43

±0.45 ±0.45 ±0.45 ±0.55 ±0.66 ±0.71 ±0.78 ±0.86 ±0.91 ±1.04 ±1.16 ±1.29 ±1.47 ±1.58 ±1.72

All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. Weight and WR2 at maximum bore. Col. 1 and 4 give maximum HP/100 RPM permitted when combined with maximum radial load. Col. 2 and 5 give maximum HP/100 RPM permitted when combined with 2/3 maximum radial load. Col. 3 and 6 give maximum HP/100 RPM permitted when combined with 1/3 maximum radial load. Maximum torque and peak overload torque are based on 1/3 maximum radial load. Consult Rexnord for minimum rough bore on sizes 162-450.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Single-Flexing Disc Couplings Type SN Single Type SN single couplings are used for floating shaft applications where the user wishes to supply his own intermediate solid shaft, or for single-flexing applications where light-tomoderate radial loads occur. They are generally more economical than ST couplings.

Construction Hubs: Carbon steel Bolts: Alloy steel Disc Packs: Tomaloy Tpack (not available for size 450) Coatings Available: Consult Rexnord Other disc pack materials such as stainless steel, Monel and Inconel are available; please consult Rexnord. Misalignment: 1/3° per disc pack NOTE: Single-flexing couplings cannot accommodate parallel misalignment. They are not suitable for connecting equipment where both shafts are held rigidly in their own bearings.

General Dimensions (mm) Coupling Size

➁ Max. Bore

A

B

F

G

N

100 125 162 200 226 262 312 350 375 425 450 500T 550T 600T 700T 750T

28 34 50 58 70 84 97 110 120 130 140 146 166 176 205 224

82 98 114 138 148 170 198 222 246 267 287 327 367 406 464 503

35 41 48 54 67 76 86 95 102 108 114 127 140 152 178 191

82 96 109 123 148 164 184 204 218 232 248 274 303 330 386 413

43 52 70 43 52 70 43 52 70 178 189 213 240 260 298 321

11.4 13.2 13.7 11.4 13.2 13.7 11.4 13.2 13.7 15.7 19.8 19.8 23.1 24.9 30.5 32.3

Coupling Size

100 125 162 200 226 262 312 350 375 425 450 500T 550T 600T 700T 750T

Max. Kilowatt Per 100 RPM Service Factor 1.0

0.97 2.64 5.03 10.2 16.9 61 61 79 119 159 178 292 391 513 799 992

Type SN Single

Max. RPM

Max. Continuous Torque (Nm)

Peak Overload Torque (Nm)

➂ Weight (kg)

➂ WR2 (kg-m2)

➀ Axial Capacity (mm)

7,100 6,500 6,000 5,500 5,200 4,800 4,500 4,100 3,900 3,700 3,600 2,800 2,500 2,300 2,000 1,800

93 252 480 972 1611 5966 5,803 7,552 11,323 15,161 16,979 27,817 37,300 48,973 76,180 94,694

185 504 960 1943 3222 11931 11605 15105 22646 30323 33958 55633 74599 97945 152359 189388

1.0 1.7 2.6 5.0 6.4 10.4 16.8 23.6 32.2 40.4 54.9 68.1 95.3 116.7 177.1 242.4

0.0008 0.0019 0.0050 0.0108 0.0155 0.0342 0.0772 0.134 0.225 0.339 0.462 0.837 1.50 2.05 3.54 7.21

±0.48 ±0.58 ±0.45 ±0.45 ±0.45 ±0.55 ±0.66 ±0.71 ±0.78 ±0.86 ±0.91 ±1.04 ±1.16 ±1.29 ±1.47 ±1.58

➀ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of the end-float restricting devices. ➁ Consult Rexnord for minimum rough bore on sizes 162-450. ➂ Weight and WR2 shown at maximum bore.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

25

Rexnord Thomas Flexible Disc Couplings High Performance THP THP couplings are designed for use on high-speed equipment where coupling size and weight must be kept to a minimum. Typically, these couplings connect prime movers such as motors, steam and gas turbines, rotary engines and gas expanders, to centrifugal and rotary compressors, generators, process and boiler feed pumps. Test stand and marine propulsion drives also benefit from this unique coupling design. The flexing elements are precision-stamped from a high-strength 300 series stainless steel. This material has been used successfully for many years in Thomas couplings manufactured for helicopter drive shaft applications. Special materials for hubs, spacers and/or flexing elements are available to meet unique application requirements.

Construction Hubs and Center Member: Heat treated 4140 and 4340 alloy steel Bolts: Aircraft quality alloy steel with 12-point wrenching pattern Disc Packs: High strength 300 series stainless steel Coatings Available: Black oxide, zinc, cadmium and other coatings available per customer specification. Other disc pack materials such as Monel and Inconel are available; please consult Rexnord.

General Dimensions (mm) Coupling Size

A

B

C

D

E

F

➁ G

➀ Max. Bore Hydraulic H

L

M

N

442-6 519-6 519-8 638-6 638-8 744-6 744-8 850-6 850-8 948-6 948-8 1025-6 1025-8

137 162 164 195 195 225 225 257 257 291 291 318 318

52 66 66 79 79 94 94 106 106 119 119 134 134

457 457 457 457 457 457 457 457 457 457 457 457 457

79 98 98 117 117 138 138 159 159 178 178 197 197

73 92 92 111 111 130 130 149 149 167 167 184 184

587 618 618 646 646 676 676 705 705 733 733 770 770

76 95 95 114 114 133 133 152 152 171 171 191 191

51 64 64 76 76 89 89 102 102 114 114 127 127

3.2 3.2 3.2 3.2 3.2 3.2 3.2 3.2 3.2 3.2 3.2 3.2 3.2

114 135 135 162 162 189 189 211 211 237 237 263 263

96 114 114 127 128 133 133 159 161 181 182 201 203

Coupling Size

➀ Max. Standard Bore (mm)

➂➃ Max. Continuous Torque Rating (Nm)

Max. Speed RPM

➄ Weight (kg)

442-6 519-6 519-8 638-6 638-8 744-6 744-8 850-6 850-8 948-6 948-8 1025-6 1025-8

51 64 64 76 76 89 89 102 102 114 114 127 127

3050 5760 8470 8810 8810 14100 19900 22000 33200 32200 48300 42400 65400

28,500 24,000 23,800 19,900 19,900 17,200 17,200 15,100 15,100 13,400 13,400 12,250 12,250

9.7 16.0 16.4 24.7 24.7 37.3 38.0 56.7 57.6 78.9 80.7 107 109

➀ ➁ ➂ ➃ ➄ ➅

26

Spacer Tube Per Inch

➄ WR2 (kg-m2)

➄ Half Coupling C.G. (mm)

➄ Torsional Stiffness Kt x 106 (Nm/Rad)

Kt x 106 (Nm/Rad)

Weight (kg)

WR2 (kg-m2)

➅ Axial Capacity Continuous (mm)

0.02 0.05 0.05 0.11 0.11 0.214 0.222 0.430 0.448 0.761 0.799 1.24 1.30

41.7 51.1 51.1 61.7 62.0 72.9 73.2 80.8 81.0 90.7 90.7 102 103

0.0884 0.181 0.208 0.322 0.369 0.566 0.656 0.917 1.08 1.45 1.74 2.09 2.52

3.45 6.73 6.73 11.6 11.6 23.5 23.5 42.7 42.7 69.7 69.7 108 108

0.150 0.187 0.187 0.224 0.224 0.224 0.330 0.454 0.454 0.594 0.594 0.748 0.748

0.000217 0.000424 0.000424 0.000734 0.000734 0.00148 0.00148 0.00269 0.00269 0.00439 0.00439 0.00679 0.00679

±3.05 ±3.68 ±2.54 ±4.44 ±3.18 ±5.21 ±3.68 ±5.97 ±4.19 ±6.73 ±4.70 ±7.37 ±5.21

For larger bores, consult Rexnord. May be reduced for smaller shaft sizes. Consult Rexnord. Minimum service factor to be applied = 1.5 Max. peak overload torque = 1.33 x max. cont. torque Information based on standard dimensional data shown. Max. transient axial misalignment = 120% of values shown above.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Flexible Disc Couplings High Performance Series 63 Series 63 couplings incorporate a patented* one-piece disc/diaphragm flexing element for positive torque transmission with low restoring forces. This unitized assembly accommodates misalignment and transmits torque through a multiple disc arrangement which provides redundancy in construction with a high degree of reliability. Pilot plates on the sides of each flexing element give accurate, repeatable registration of coupling components, and retain original dynamic balance repeatability while protecting the flexing members from damage. Series 63 couplings are ideal for the most demanding drive requirements. Prime movers include motor, steam and gas turbines, rotary engines, and gas expanders. Driven equipment applications include centrifugal and rotary compressors, generators, test stands, boiler feed pumps and other multi-stage pumps, and marine propulsion drives. Custom designs available for torsional tuning and reduced moment.

To determine Kt for a coupling with longer than standard “C” dimension, use the formula shown to the right:

*U.S. Patent 4055966

Where ▲L = additional “C” dimension required ▲Kt = torsional stiffness change per inch of “C” dimension and 1/Kt - inverse of catalog value.

Construction Hubs and Center Member: Heat-treated alloy steel Bolts: Alloy steel Disc Packs: High strength 300 series stainless steel Coatings Available: Consult Rexnord Other disc pack materials such as stainless steel, Monel and Inconel are available; please consult Rexnord. When specified, Series 52 couplings meet all requirements of API 671. If application requires API specification, please consult Rexnord.

E D

A G H

N

B

K

C

B1

F

General Dimensions (mm) Max. Bore

Coupling Size

Hydraulic H

Keyed K

162 200 225 262 312 350 375 425 450 500 550 600 700 750

51 67 71 82 95 106 119 126 136 152 170 186 208 224.5

48 62 67 76 89 99 111 117 127 142 159 173 194 209.6

A

B

B1

➀ Std. C

Min. C

D

E

F

➁ G Max.

N

Capacity

108 139 145 171 203 226 251 272 292 333 375 416 475 515.9

52 70 74 86 100 111 124 134 145 164 187 205 228 246.1

48 62 67 76 89 99 111 117 127 142 159 173 194 209.6

127 127 127 152 152 178 178 203 203 229 251 286 305 355.6

83 105 108 121 127 164 168 187 194 216 251 286 – –

61 86 89 100 121 127 154 165 178 197 222 238 270 300.0

56 81 84 94 113 119 145 154 166 183 205 218 246 274.3

227 259 267 314 341 388 413 455 475 535 597 664 726 811.3

71 93 100 114 133 148 167 176 191 213 238 260 291 314.5

13.46 17.27 17.78 19.81 23.88 28.70 29.72 33.27 34.80 37.59 43.94 51.56 53.34 58.42

±1.27 ±1.77 ±1.39 ±1.52 ±1.90 ±2.03 ±2.28 ±2.54 ±2.79 ±3.04 ±3.55 ±3.81 ±4.44 ±4.82

Dynamic Data Coupling Size

162 200 225 262 312 350 375 425 450 500 550 600 700 750 ➀ ➁ ➂ ➃

➃ Standard Mass-Elastic Data

Max. Speed RPM

Max. Continuous Torque (Nm)

Peak Overload Torque (Nm)

Weight (kg)

WR2 (kg-m2)

Kt x 106 (kg-mm/Rad)

C.G. (mm)

36,000 28,600 26,700 22,500 19,100 17,200 15,600 14,300 13,300 11,600 10,300 9,300 8,200 7,500

665 1,537 2,384 4,271 7,242 9,253 14,236 19,094 24,066 35,703 51,295 71,180 102,025 129,933

1,661 3,841 5,954 10,677 18,078 23,162 35,590 47,793 60,221 89,258 128,238 177,951 255,120 324,831

3.5 7.4 8.7 13.9 23.1 31.4 42.2 53.5 66.7 97.1 139.7 188.7 274.4 350.6

0.00483 0.01752 0.02291 0.04893 0.116 0.195 0.322 0.478 0.683 1.275 2.306 3.809 7.21 10.84

5.78 20.51 26.84 44.93 65.21 109.9 141.7 218.9 241.9 400.9 574.9 706.3 1152 1509

9.4 14.2 15.7 17.0 18.8 20.1 25.1 24.6 27.7 30 34 35 37 39

➂

Change per mm of “C” Weight (kg)

WR2 (kg-m2)

Kt x 106 (kg-mm/Rad)

0.086 0.122 0.127 0.191 0.286 0.304 0.404 0.549 0.612 0.839 1.15 1.43 1.93 2.28

0.00008 0.00022 0.00024 0.00045 0.00098 0.00114 0.00226 0.00349 0.00454 0.00756 0.0132 0.0186 0.0322 0.0475

121.0 344.5 387.1 722.4 1578 1843 3652 5657 7328 12213 21314 30070 51961 76040

Standard dimension - may be modified as necessary. “G” dimension at listed maximum bore and will vary depending on bore size. Consult Rexnord with higher speed requirements. Weight and C.G. data based on standard “C” dimension, maximum hydraulic bores (H) and hydraulic hub lengths (B). Torsional stiffness (Kt) assumes a 1/3 shaft penetration factor.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

27

Rexnord Thomas Miniature Couplings Thomas Miniature Flexible Disc Couplings

Guide to Proper Designation of Hubs

Construction Hubs and Center Member: Aluminum alloy, anodized Rivets: Brass Washers: Brass Discs: Stainless steel Set screws: 18-8 Stainless steel, Passivated Max. Temperature: 250˚F Available with electronically insulated phenolic material.

Style CC This coupling has both hubs inverted and is designed to fit shafts normally encountered at a given torque range. Ideal for use where space limitations require close coupling of the shafts. General Dimensions (mm) Coupling Size

A

B

C

F

T

➀ Torque Capacity (Nm)

12 18 25 37 50 62 75 100

12.7 19.1 25.4 36.5 44.5 57.2 63.5 76.2

6.4 9.5 12.7 17.5 23.8 27.0 30.2 34.9

0.8 1.6 1.6 3.2 3.2 3.2 3.2 6.4

13.5 20.6 27.0 38.1 50.8 57.2 63.5 76.2

0.46 0.58 0.64 0.89 1.14 1.52 1.52 1.52

0.12 0.25 0.53 2.15 8.47 33.90 49.71 79.09

➀ Torque capacities are based on smooth drives with moderate torque fluctuations. Reduce ratings to 1/3 the value shown for severe applications such as indexing drives where torque reversals occur. ➁ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices.

Style CA This design of our miniature coupling has one inverted hub to accept a normal shaft and one extended hub to accommodate oversize shafts. It also accommodates a larger shaft gap than the Style CC. General Dimensions (mm) Coupling Size

A

B

C

F

G

T

➀ Torque Capacity (Nm)

12 18 25 37 50 62 75 100

12.7 19.1 25.4 36.5 44.5 57.2 63.5 76.2

6.4 9.5 12.7 17.5 23.8 27.0 30.2 34.9

6.0 9.5 11.9 17.5 23.0 25.4 28.6 34.9

18.7 28.6 37.3 52.4 70.6 79.4 88.9 104.8

7.9 11.9 15.9 22.2 27.0 34.9 41.3 47.6

0.46 0.58 0.64 0.89 1.14 1.52 1.52 1.52

0.12 0.25 0.53 2.15 8.47 33.90 49.71 79.09

➀ Torque capacities are based on smooth drives with moderate torque fluctuations. Reduce ratings to 1/3 the value shown for severe applications such as indexing drives where torque reversals occur. ➁ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices.

28

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Miniature Couplings Style CB & CBC This coupling design has both hubs extended to accept two oversized shafts. Shaft gap is larger than that of the Style CA or CC couplings. Style CBC is the newest addition to our miniature coupling line. It offers clamping hubs that are an integral part of the coupling. The clamping hubs assure positive fit on the shafts. There are no loose parts to handle during installation. The Style CBC coupling has the same dimensions and torque capacities as the Style CB. Consult Rexnord for additional design and engineering data.

General Dimensions (mm) Coupling Size

A

B

C

F

G

Torque Capacity (Nm)

12 18 25 37 50 62 75 100

12.7 19.1 25.4 36.5 44.5 57.2 63.5 76.2

6.4 9.5 12.7 17.5 23.8 27.0 30.2 34.9

11.1 17.5 22.2 31.8 42.9 47.6 54.0 63.5

23.8 36.5 47.6 66.7 90.5 101.6 127.0 127.0

7.9 11.9 15.9 22.2 27.0 34.9 41.3 47.6

0.12 0.25 0.53 2.15 8.47 33.90 49.71 79.09

Styles CC, CA, CB & CBC Ratings and Mass Elastic Data Coupling Size

Max. RPM

➀ Approx Weight (kg)

➀ Approx WR2 (kg-m2)

Torsional Rigidity Kt x 106 (kg-mm/Rad)

Max. Angular Misalignment Continuous Per Flexing Element

Max. Parallel Misalignment Continuous (mm)

Axial Capacity (Nm)

12 18 25 37 50 62 75 100

150,000 100,000 80,000 55,000 45,000 35,000 30,000 25,000

0.03 0.08 0.21 0.57 1.14 2.65 3.28 5.67

0.048 0.324 1.46 8.67 25.94 91.3 157.5 420.7

0.107 0.0654 0.0266 0.00399 0.00261 0.00100 0.000641 0.000475

2° 2° 2° 1.5° 1° 0.67° 0.67° 0.50°

0.381 0.381 0.711 0.711 0.711 0.711 0.711 0.508

±0.40 ±0.40 ±0.78 ±0.78 ±0.78 ±0.78 ±0.78 ±0.78

➀ Weight and WR2 at maximum bore. ➁ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modifcation or the addition of end-float restricting devices.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

29

Rexnord Thomas Miniature Couplings Style CE Two single-flexing units are connected by a tubular shaft in this type of miniature coupling. It is designed to span large distances between shafts and is ideal for those applications where a large amount of parallel misalignment is anticipated.

General Dimensions (mm) Coupling Size

A

B

12 18 25 37 50 62 75 100

12.7 19.1 25.4 36.5 44.5 57.2 63.5 76.2

6.4 9.5 12.7 17.5 23.8 27.0 30.2 34.9

F

G

Varies with “L” specified

7.9 11.9 15.9 22.2 27.0 34.9 41.3 47.6

L

➁ Torque Capacity (Nm)

➀ Weight (kg)

Weight Change Per mm of “L” (kg)

Variable to suit requirements

0.12 0.25 0.53 2.15 8.47 33.90 49.71 79.09

0.013 0.027 0.048 0.12 0.22 0.41 0.51 0.811

0.0008 0.0014 0.0016 0.0031 0.0051 0.0062 0.0108 0.0119

➀ Weight calculated at maximum bore and “L” = 304.8 mm ➁ Torque capacities are based on smooth drives with moderate torque flucuations. Reduce ratings to 1/3 the value shown for severe applications such as indexing drives where torque reversals occur. ➂ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices.

Miniature Couplings Standard Bores- All standard bore are in inches CC Coupling Size

12 18

Hub Inside of Center Member

3.05 3.18

CA Tolerance

±.00762

➃

–

Hub Inside of Center Member

3.05 3.18 ➃

CB

Tolerance

Hub Outside of Center Member

±.00762 –

Tolerance

Hub Outside of Center Member

➃

–

➃

–

6.36 25

6.36

±.0127

50

62

±.0127

±.0127

7.95

–

➃

–

7.95

±.0127

7.95

Tolerance

➃

–

➃

–

➃

–

➃

–

7.95

±.0127

7.95

6.36 ±.0127

7.95

–

9.54

9.54

9.54

9.54

– 6.36

12.71 6.36

12.71 6.36

12.71 6.36

12.71 6.36

7.95

7.95

7.95

7.95

7.95

7.95

9.54

9.54

9.54

9.54

9.54

12.71

±.0127

12.71

±.0127

11.13

±.0127

11.13

±.0127

11.13

±.0127

9.54 11.13

–

–

12.71

12.71

12.71

12.71

– 9.54

– 9.54

15.89 9.54

15.89 9.54

15.89 9.54

15.89 9.54

12.71 15.89

±.0127

15.89

12.71 15.89

±.0127

15.89

15.89

±.0127

±.0127

25.41

12.71 15.89

±.0127

±.0127

25.41

12.71 15.89

±.0127

±.0127

25.41

19.06

➃ Standard bores not available NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

12.71 15.89

±.0127

±.0127

±.0127

19.06

19.06

19.06

19.06

– 12.71 ±.0127

12.71

±.0127

9.54 4.78

6.36 ±.0127

7.95

– 6.36

19.06

30

6.36

9.54 4.78

6.36 ±.0127

Tolerance

6.36

9.54 4.78

6.36 ±.0127

➃

CS Hub Outside of Center Member

–

– 12.71 75

9.54

7.95

Tolerance

6.36

9.54 4.78

7.95

7.95 9.54

±.0127

6.36

6.36 37

6.36

CE1 Hub Outside of Center Member

±.0127

25.41

±.0127

Rexnord Thomas Couplings Rexnord Thomas Backstop

• • • •

Bolts directly to Thomas SN & TSN-CT hubs Prevents reverse shaft rotation of cooling tower fans All stainless steel construction For non-corrosive environments this can be supplied in carbon steel

Bolt-On Backstop Tabulation Mating Hub Backstop Bolting Info Coupling Size

Max. Bore

162 200

B.C. Dia

➀ Capscrew Size (Inch for capscrew dimensions)

Min Tap DP

Tight Torque (Nm)

48

58.7

1/4 - 20 NC x 1.50

15.7

2.8

54

68.3

1/4 - 20 NC x 1.50

15.7

2.8

226

67

82.6

1/4 - 20 NC x 1.50

15.7

4.5

262

79

98.4

3/8 - 16 NC x 1.75

22.4

16.0

312

92

112.7

7/16 - 14 NX x 2.00

28.4

25.4

350/375

102

123.8

1/2 - 13 NC x 2.00

28.4

39.5

OD

W (Ref)

Compressed

Sprung

Compressed Speed (RPM Ref)

133.35

25.4

144.526

165.1

450 RPM Ref

231.648

28.448

233.426

268.224

400 RPM Ref

Special integral hub/backstop can be supplied. ➀ 162 & 200 size supplied with (4) socket head capscrews. All other sizes supplied with four hex head capscrews. ➁ Backstop may be inversely mounted for opposite rotation.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

31

Rexnord Thomas Flexible Disc Couplings Spacer Type Series 52 - SEE PAGES 10-11 FOR UPDATED VERSION WITH ENHANCED FEATURES Series 52 couplings are all-purpose high-speed, high-torque couplings used where minimum coupling weight is desirable. They are commonly used on motor and turbine driven pumps, compressors and fans. Design modifications may be made to further reduce the coupling weight, making it an economic alternative to high performance disc and diaphragm couplings.

Construction Hubs and Center Assembly: Carbon Steel Bolts: Alloy Steel Disc Packs: Tomaloy Tpack (225-750 Size) Coatings Available: Black Oxide, Zinc, Cadmium Other materials such as stainless steel, Monel and Inconel are available; please consult Rexnord. Misalignment: 1/3° per disc pack When specified, Series 52 couplings meet all requirements of API 610 or API 671. If application requires API specification, please consult Rexnord. General Dimensions (mm) Coupling ➅ Size Max. Bore

125 162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925 1000 1100 1200 1300

Coupling Size

125 162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925 1000 1100 1200 1300

34 50 58 70 84 97 110 120 130 140 146 166 176 205 224 241 250 267 290 314 339 376

A

B

➁ Std. C

94 110 138 145 168 198 221 246 267 287 327 367 406 464 503 546 584 635 699 741 816 876

33 44 52 67 73 86 95 102 108 114 127 140 152 178 191 210 222 241 267 286 311 337

102 127 127 127 127 140 152 178 178 203 229 254 254 279 279 305 330 356 368 406 432 457

Max. Kilowatt Per 100 RPM

➁ Stocked C

Min. C

100 Consult 100, 140 52 100, 140 67 100, 140, 180 70 140, 180 82 140, 180 95 180, 250 106 180, 250 117 180, 250 125 180, 250 136 250 153 250 175 250 191 – 217 – 235 – 255 – 273 – 292 – – – – – – – –

➄ Max. RPM

Service Factor 1.0

➂➄ Not Balanced

Balanced

Max. Continuous Torque (Nm)

3.2 6.3 12.5 20.7 38.9 60.8 79.0 118.6 158.8 178.2 291.5 390.7 512.9 798.5 992.4 1276.5 1506.1 2039.2 2306.9 2750.5 3353.7 4010.6

5,000 4,600 4,250 4,100 3,900 3,450 3,200 3,000 2,800 2,700 2,500 2,300 2,150 1,950 1,850 1,750 1,600 1,500 – – – –

15,000 15,000 15,000 14,000 13,000 11,700 10,500 9,400 8,700 8,100 7,100 6,300 5,700 5,000 4,600 4,300 3,900 3,600 3,250 3,100 2,800 2,600

305 604 1,185 1,976 3,706 5,803 7,552 11,323 15,161 16,979 27,817 37,300 48,973 76,180 94,694 121,777 143,712 194,626 220,140 262,475 320,050 382,705

F

G

N

168 216 232 260 273 311 343 381 394 432 483 533 559 635 660 724 775 838 902 978 1054 1130

52 70 83 96 114 133 149 165 178 189 213 240 260 298 321 346 368 400 438 470 514 556

7 7 9 9 12 13 14 15 16 18 20 23 25 30 32 34 36 38 43 44 50 52

Taper Bores Also Available

Peak Overload Torque (Nm)

➃ Weight (kg)

Weight Change Per mm of “C” (kg)

➃ WR2 (kg-m2)

WR2 Change Per mm of “C” (kg-m2)

➀ Axial Capacity (mm)

610 1,208 2,371 3,951 7,413 11,605 15,105 22,646 30,323 33,958 55,633 74,599 97,945 152,359 189,388 243,554 287,424 389,253 440,280 524,949 640,099 765,410

2.1 3.3 5.6 7.3 11.8 18.8 26.6 36.3 47.2 57.7 89.0 127.6 168.0 257.4 323.2 413.6 503.5 662.4 853.5 1021.5 1366.5 1661.6

0.003 0.004 0.004 0.006 0.009 0.012 0.015 0.018 0.026 0.026 0.041 0.052 0.059 0.082 0.093 0.107 0.107 0.143 0.161 0.197 0.268 0.268

0.0022 0.0046 0.0128 0.0178 0.0401 0.0878 0.154 0.266 0.404 0.576 1.112 2.019 3.277 6.525 9.685 15.05 20.98 32.60 50.30 68.91 110.16 153.23

0.00170 0.00310 0.00670 0.00980 0.0180 0.0360 0.0550 0.0830 0.135 0.156 0.313 0.495 0.705 1.19 1.65 2.30 2.30 4.61 5.83 9.15 13.78 15.55

±0.91 ±0.91 ±0.91 ±0.91 ±1.09 ±1.29 ±1.42 ±1.57 ±1.70 ±1.82 ±2.02 ±2.33 ±2.59 ±2.92 ±3.17 ±3.45 ±3.65 ±3.96 ±4,36 ±4,64 ±5,15 ±5,53

➀ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices. ➁ Additional “C” dimensions available. Consult Rexnord. ➂ Series 52 couplings meet AGMA Class 9 balance requirements as manufactured with interference fit bore and close fit keyway. If clearance fit and/or setscrews are required, please consult Rexnord. See page 4 for explanation of RPM limits and balancing recommendations. ➃ Weight and WR2 at maximum bore and standard “C” dimension listed. ➄ Balance recommendations based on AGMA Specification 9000-C90 Average Sensitivity. ➅ Consult Rexnord for minimum rough bore sizes.

32

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

Rexnord Thomas Flexible Disc Couplings Spacer Type Series 71 - SEE PAGES 12-13 FOR UPDATED VERSION WITH ENHANCED FEATURES Series 71 couplings are designed for applications requiring a spacer-type coupling such as ANSI, API and other process pumps. Series 71 couplings are most commonly applied on motor, turbine, and gear driven pumps, compressors and blowers. Series 71 is a simple three-piece design. Three piece design features unitized center member assembly and two piloted hubs. Hubs are piloted fit to the factory assembled center member. The piloting provides repeatable assembly of components for better dynamic balance characteristics. The center assembly simply “drops out” for fast installation or removal without special tools. The disc design allows for low flexing forces and high overload capacity.

Construction Hubs and Center Assembly: Carbon steel Bolts: Alloy steel Disc Packs: Stainless steel for 4- & 6-bolt designs Stainless steel Tpack for 8-bolt design Coatings Available: Black oxide, zinc, cadmium Other disc pack materials such as Monel and Inconel are available; please consult Rexnord. Misalignment: 1/2° per disc pack for 4- and 6-bolt designs, 1/3° per disc pack for 8-bolt design When specified, Series 71 couplings meet all requirements of API 610 or API 671. If application requires API specification, please consult Rexnord.

Series 71 Balance Recommendations

NOTE: These recommendations and balance classes are based on AGMA Specifications 9000C90, high sensitivity. If conditions exist other than as defined in 9000-C90, for sensitivity, consult Rexnord. The above information should be used as a guide only. AGMA Class 9 balance is furnished as standard when Series 71 couplings are finished bored with interference fits.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

33

Rexnord Thomas Flexible Disc Couplings Spacer Type Series 71 4-, 6- & 8-Bolt 4- & 6-Bolt Design

8-Bolt Design

General Dimensions (mm) Coupling Size

➅ B&B1 Hub Max. Bore

➅ B&B2 Hub Max. Bore

A

B

150 175

39 50

64 73

91 106

33 40

225 300 350 375 412 462 512 562 600

58 81 95 100 110 130 140 156 166

87 110 120 137 145 166 187 200 220

125 152 171 194 203 229 255 279 298

51 67 79 83 92 105 114 127 133

225-8 262-8 312-8 350-8 375-8 425-8 450-8 500-8 550-8 600-8 700-8 750-8

80 95 112 130 144 158 170 196 215 242 258 286

106 128 145 166 185 203 214 248 – – – –

152 175 203 227 252 273 294 333 373 416 471 511

64 78 90 99 113 124 129 151 167 183 211 227

79 94 109 121 135 149 157 179 198 214 246 262

Service Factor 1.0

➄ Not Balanced

➃ Balanced

Max. Continuous Torque (Nm)

Peak Overload Torque (Nm)

150 175

1.1 1.9

9,000 8,300

20,800 17,000

105 184

225 300 350 375 412 462 512 562 600

3.6 8.6 15.8 22.8 26.6 47.8 65.0 99.4 108.4

7,700 6,800 6,200 5,650 5,350 5,000 4,700 4,350 4,150

16,000 14,000 13,500 12,000 11,000 10,000 9,200 8,300 7,800

345 820 1,513 2,179 2,540 4,561 6,209 9,494 10,352

B1

Std. B2

Std. C

Min. C

E

G

41 46

89 89

87 87

52 65

59 71

52 70 76 83 92 105 114 127 133

127 127 127 140 178 178 178 203 229

87 102 124 127 155 178 191 203 229

78 105 127 135 146 160 179 195 211

85 113 133 144 155 174 194 213 227

78 90 105 114 131 140 152 171 – – – –

127 178 191 191 191 203 229 279 292 318 368 400

121 140 152 171 184 191 222 260 292 318 368 400

106 119 146 165 181 189 213 232 254 298 325 363

116 132 160 179 202 214 236 267 292 336 373 413

➁ Weight (kg)

Weight Change Per mm of “C” (kg)

➁ WR2 (kg-m2)

WR2 Change Per mm of “C” (kg-m2-m)

➀ Axial Capacity (mm)

3.0 4.3

0.0018 0.0025

0.0031 0.0060

0.00035 0.00104

±0.127 ±0.1778

6.4 11.8 19.5 25.0 32.2 45.9 61.3 84.4 103.5

0.0034 0.0046 0.0075 0.0077 0.0107 0.0143 0.0186 0.0229 0.0313

0.0123 0.0354 0.0758 0.1238 0.1799 0.3248 0.5355 0.8837 1.2436

0.00288 0.00760 0.0136 0.0187 0.0334 0.0536 0.0856 0.120 0.202

±0.1905 ±2.159 ±2.296 ±2.413 ±2.794 ±3.048 ±3.302 ±3.683 ±4.064

0.0123 0.0225 0.0385 0.0649 0.106 0.145 0.207 0.362 0.574 0.796 1.36 2.02

±0.91 ±1.09 ±1.29 ±1.42 ±1.57 ±1.70 ±1.82 ±2.02 ±2.34 ±2.59 ±2.92 ±3.18

4-Bolt Design

43 52 6-Bolt Design

64 83 95 102 111 127 137 152 162 8-Bolt Design

Coupling Size

Max. Kilowatt Per 100 RPM

➃ Max. RPM

4-Bolt Design

210 368 6-Bolt Design

691 1,639 3,026 4,358 5,080 9,122 12,418 18,988 20,704 8-Bolt Design

225-8 20.7 7,500 14,000 1,976 3,952 12.6 0.0068 0.0375 262-8 38.8 6,800 12,500 3,706 7,412 19.5 0.0082 0.0775 312-8 60.8 6,200 11,500 5,803 11,606 30.0 0.0098 0.1697 350-8 79.1 5,700 10,500 7,552 15,104 43.0 0.0134 0.3017 375-8 118.6 5,200 9,800 11,323 22,646 61.0 0.0188 0.5220 425-8 158.8 5,000 9,300 15,161 30,322 77.0 0.0218 0.7654 450-8 177.8 4,700 8,700 16,979 33,958 100.0 0.0284 1.1763 500-8 291.3 4,200 7,900 27,817 55,634 155.0 0.0379 2.3525 550-8 390.6 3,900 7,300 37,300 74,600 216.0 0.0474 4.0759 600-8 512.9 3,600 6,800 48,973 97,946 296.0 0.0545 7.0604 700-8 797.8 3,300 6,200 76,180 152,360 436.0 0.0738 13.1377 750-8 991.7 3,100 5,800 94,694 189,388 564.0 0.0924 20.2538 ➀ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modifications or the addition of end-float restricting devices. ➁ Weight and WR2 with standard length hubs, maximum bore and standard “C”. ➂ Extended hub length is designed longer in order to include a counter-bore for the threaded extension on a tapered shaft. ➃ See page 4 for explanation of RPM limits and balancing recommendations. ➄ Series 71 Coupling assembly meets AGMA Class 9 Balance when finish bored with interference fits. ➅ Consult Rexnord for minimum rough bore sizes. ➆ If a block hub is supplied, extra capscrews will be provided for center member jacking feature. NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request. 34

Thomas Flexible Disc Couplings Close-Coupled Series 54RD Series 54RD couplings are specifically designed as replacements for close-coupled gear and grid couplings, and where overall shaft-to-shaft spacing is minimal. Materials of construction are identical to the Series 52. Stainless steel disc packs are supplied as standard. To reduce maintenance costs, the Series 54RD is furnished with an axially split center member. This design permits the removal of the disc packs without moving the connected equipment. When specified, and based on speed requirements, the Series 54RD can be manufactured to meet API 610. If application requires API specification, please consult Rexnord.

General Dimensions (mm) Coupling Size

Max Bore* Internal (mm)

Max Bore* External (mm)

A

B

C

C1**

F

F1**

H

N

G

C2***

F2***

125 162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925 1000

20 42 58 65 74 95 100 114 120 130 137 150 166 195 206 223 235 248 264

34 50 58 70 84 97 110 120 130 140 146 166 176 205 224 241 250 267 290

94 110 138 145 168 198 221 246 267 287 327 367 406 464 503 546 584 635 699

47 48 54 56 66 72 83 90 101 114 120 135 152 178 197 210 226 252 273

3.1 3.1 3.1 3.1 4.8 4.8 6.4 6.4 6.4 7.9 7.9 9.7 9.7 9.7 12.7 12.7 14.2 15.8 15.8

43.4 45.0 50.0 51.6 61.5 66.6 77.7 83.1 91.7 105.7 108.5 122.2 136.9 158.0 177.8 187.2 202.4 226.3 244.4

97 99 111 114 136 149 173 187 208 236 248 279 314 365 406 432 465 519 562

137 140 158 163 193 211 244 264 293 334 348 392 442 514 572 606 654 730 790

4.3 4.3 5.6 5.6 6.4 7.6 8.6 9.9 10.7 11.9 12.7 14.7 17.0 19.1 21 23 25 28 29

6.9 7.4 9.1 9.1 11.9 12.7 13.7 15.0 15.8 18.0 19.8 23.1 24.9 30.2 32.3 34.0 35.6 38.1 42.9

44 59 83 89 105 127 140 154 167 178 200 222 236 276 298 318 335 359 413

83.8 86.9 96.5 100.1 118.1 128.3 149.1 159.3 177.0 203.0 208.5 234.7 264.7 306.3 342.9 361.7 390.7 436.9 465.3

177 182 190 211 250 273 316 340 379 432 448 504 569 662 737 781 842 940 1019

* Non-bored hubs available upon request. ** Hubs may be reversed for alternate shaft spacing. *** Both hubs reversed. NOTE: When hub is used with barrel positioned outside of spacer, a Series 52 hub is used.

Coupling Size

125 162 200 225 262 312 350 375 425 450 500 550 600 700 750 800 850 925 1000

Max. Kilowatt Per 100 RPM

Max. RPM

Service Factor 1.0

Not Balanced

➂

Maximum Continuous Torque (Nm)

Balanced

2.8 5.2 10.0 12.7 20.7 28.7 40.3 60.4 85.5 97.2 147 254 318 409 552 686 838 1120 1537

4,600 4,200 3,800 3,700 3,600 3,000 2,800 2,500 2,300 2,200 2,000 1,900 1,800 1,700 1,550 1,450 1,350 1,300 1,200

7,200 7,000 6,300 6,000 5,500 5,000 4,500 4,000 3,700 3,400 3,300 2,800 2,500 2500 2,200 2,100 1,950 1,850 1,750

263 492 958 1,208 1,976 2,743 3,850 5,769 8,162 9,280 13,999 24,272 30,368 39,061 52,721 65,478 80,041 106,909 146,760

Peak Overload Torque (Nm)

Weight (kg)

WR2 (kgm2)

➁

Axial Capacity (mm)

526 984 1,917 2,416 3,951 5,487 7,699 11,538 16,324 18,559 27,997 48,544 60,736 78,121 105,441 130,955 160,081 213,818 293,520

3.0 4.4 7.3 8.2 14.1 21.5 31.0 42.9 56.8 74.9 109 158 217 324 402 499 663 890 1,108

0.0035 0.0070 0.0190 0.0234 0.0524 0.117 0.207 0.363 0.562 0.849 1.586 2.870 4.828 9.334 13.489 19.751 30.138 47.401 72.272

±0.91 ±0.91 ±0.91 ±0.91 ±1.09 ±1.29 ±1.42 ±1.57 ±1.70 ±1.82 ±2.02 ±2.33 ±2.59 ±2.92 ±3.17 ±3.45 ±3.65 ±3.96 ±4,36

➁

➀

For larger sizes, consult Rexnord. ➀ All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modifications or the addition of end-float restricting devices. ➁ Weight and WR2 at maximum bore. ➂ For higher speeds, consult Rexnord.

NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.

35

Engineering Data – All Rexnord Couplings Recommended Hub Bores for Clearance & Interference Fit on Keyed Shafting Clearance Fit Hub Bore Fit* j6 F7 +.008 +.008/-.003 +.016/+.034 +.037 12.008/11.997 12.016/12.034 14.008/13.997 14.016/14.034 16.008/15.997 16.016/16.034 18.008/17.997 18.016/18.034 j6 F7 +.011 +.009/-.004 +.020/-.041 +.045 19.009/18.996 19.020/19.041 20.009/19.996 20.020/20.041 22.009/21.996 22.020/22.041 24.009/23.996 24.020/24.041 25.009/24.996 25.020/25.041 28.009/27.996 28.020/28.041 30.009/29.996 30.020/30.041 k6 F7 +.007 +.018/+.002 +.025/+.050 +.048 32.018/32.002 32.025/32.050 35.018/35.002 35.025/35.050 38.018/38.002 38.025/38.050 40.018/40.002 40.025/40.050 42.018/42.002 42.025/42.050 45.018/45.002 45.025/45.050 48.018/48.002 48.025/48.050 50.018/50.002 50.025/50.050 m6 F7 +.000 +.030/+.011 +.030/+.060 +.049 55.030/55.011 55.030/55.060 56.030/56.011 56.030/56.060 60.030/60.011 60.030/60.060 63.030/63.011 63.030/63.060 65.030/65.011 65.030/65.060 70.030/70.011 70.030/70.060 71.030/71.011 71.030/71.060 75.030/75.011 75.030/75.060 80.030/80.011 80.030/80.060 m6 F7 +.001 +.035/+.013 +.036/+.071 +.058 85.035/85.013 85.036/85.071 90.035/90.013 90.036/90.071 95.035/95.013 95.036/95.071 100.035/100.013 100.036/100.071 m6 F7 +.035/+.013 +.036/+.071 110.035/110.013 110.036/110.071 120.035/120.013 120.036/120.071 m6 F7 +.003 +.040/+.015 +.043/+.083 +.068 125.040/125.015 125.043/125.083 130.040/130.015 130.043/130.083 140.040/140.015 140.043/140.083 150.040/150.015 150.043/150.083 160.040/160.015 160.043/160.083 170.040/170.015 170.043/170.083 180.040/180.015 180.043/180.083 Shaft Diameter

MM 12 14 16 18 MM 19 20 22 24 25 28 30 >30 MM 32 35 38 40 42 45 48 50 >50 MM 55 56 60 63 65 70 71 75 80 >80 MM 85 90 95 100 >100 MM 110 120 >120 MM 125 130 140 150 160 170 180

Transitional Fit Hub Bore Fit* H7 -.008 +.000/+.018 +.021 12.000/12.018 14.000/14.018 16.000/16.018 18.000/18.018 H7 -.009 +.000/+.021 +.025 19.020/19.041 20.020/20.041 22.020/22.041 24.020/24.041 25.020/25.041 28.020/28.041 30.020/30.041 H7 -.018 +.000/+.025 +.023 32.000/32.025 35.000/35.025 38.000/38.025 40.000/40.025 42.000/42.025 45.000/45.025 48.000/48.025 50.000/50.025 H7 -.030 +.000/+.030 +.019 55.000/55.030 56.000/56.030 60.000/60.030 63.000/63.030 65.000/65.030 70.000/70.030 71.000/71.030 75.000/75.030 80.000/80.030 H7 -.035 +.000/+.035 +.022 85.000/85.035 90.000/90.035 95.000/95.035 100.000/100.035 H7 +.000/+.035 110.000/100.035 120.000/120.035 H7 -.040 +.000/+.040 +.025 125.000/125.040 130.000/130.040 140.000/140.040 150.000/150.040 160.000/160.040 170.000/170.040 180.000/180.040

Interference Fit Hub Bore Fit* M6 -.023 -.015/-.064 -.001 11.985/11.936 13.985/13.936 15.985/15.936 17.985/17.936 M6 -.026 -.017/-.004 +.000 18.983/18.996 20.983/20.996 21.983/21.996 23.983/23.996 24.983/24.996 27.983/27.996 29.983/29.996 K6 -.031 -.013/+.003 +.001 31.987/32.003 34.987/35.003 37.987/38.003 39.987/40.003 41.987/42.003 44.987/45.003 47.987/48.003 49.987/50.003 K7 -.051 -.021/+.009 -.002 54.975/55.009 55.975/56.009 59.975/60.009 62.975/63.009 64.975/65.009 69.975/70.009 70.975/71.009 74.975/75.009 79.975/80.009 M7 -.070 -.035/+.000 -.013 84.965/85.000 89.965/90.000 94.965/55.000 99.965/100.000 P7 -.094 -.059/-.024 -.037 109.941/109.976 119.941/119.976 P7 -.108 -.068/-.028 -.043 124.932/124.972 129.932/129.972 139.932/139.972 149.932/149.972 159.932/159.972 169.932/169.972 179.932/179.972

Clearance Fit Hub Bore Fit* m6 F7 +.004 +.046/+.017 +.050/+.096 +.079 190.046/190.017 190.050/190.096 200.046/200.017 200.050/200.096 m6 F7 +.046/+.017 +.050/+.096 210.046/210.017 210.050/210.096 220.046/220.017 220.050/220.096 225.046/225.017 225.050/220.096 m6 F7 +.046/+.017 +.050/+.096 230.046/230.017 230.050/230.096 240.046/240.017 240.050/240.096 250.046/250.017 250.050/250.096 m6 F7 +.004 +.052/+.020 +.056/+.108 +.088 260.052/260.020 260.056/260.108 270.052/270.020 270.056/270.108 280.052/280.020 280.056/280.108 m6 F7 +.052/+.020 +.056/+.108 290.052/290.020 290.056/290.108 300.052/300.020 300.056/300.108 310.052/310.020 310.056/310.108 315.052/315.020 315.056/310.108 m6 F7 +.005 +.057/+.021 +.062/+.119 +.098 320.057/320.021 320.062/320.119 330.057/330.021 330.062/330.119 340.057/340.021 340.062/340.119 350.057/350.021 350.062/350.119 355.057/355.021 355.062/355.119 m6 F7 +.057/+.021 +.062/+.119 360.057/360.021 360.062/360.119 370.057/370.021 370.062/370.119 380.057/380.021 380.062/380.119 390.057/390.021 390.062/390.119 400.057/400.021 400.062/400.119 m6 F7 +.005 +.063/+.023 +.068/+.131 +.108 410.063/410.023 410.068/410.131 420.063/420.023 420.068/420.131 430.063/430.023 430.068/430.131 440.063/440.023 440.068/440.131 450.063/450.023 450.068/450.131 m6 F7 +.063/+.023 +.068/+.131 460.063/460.023 460.068/460.131 470.063/470.023 470.068/470.131 480.063/480.023 480.068/480.131 490.063/490.023 490.068/490.131 500.063/500.023 500.068/500.131 Shaft Diameter

>180 MM 190 200 >200 MM 210 220 225 >225 MM 230 240 250 >250 MM 260 270 280 >280 MM 290 300 310 315 >315 MM 320 330 340 350 355 >355 MM 360 370 380 390 400 >400 MM 410 420 430 440 450 >450 MM 460 470 480 490 500

Transitional Fit Hub Bore Fit* H7 -.046 +.000/+.046 +.029 190.000/190.046 200.000/200.046 H7 +.000/+.046 210.000/210.046 220.000/220.046 225.000/225.046 H7 +.000/+.046 230.000/230.046 240.000/240.046 250.000/250.046 H7 -.052 +.000/+.052 +.032 260.000/260.052 270.000/270.052 280.000/280.052 H7 +.000/+.052 290.000/290.052 300.000/300.052 310.000/310.052 315.000/315.052 H7 -.057 +.000/+.057 +.036 320.000/320.057 330.000/330.057 340.000/340.057 350.000/350.057 355.000/355.057 H7 +.000/+.057 360.000/360.057 370.000/370.057 380.000/380.057 390.000/390.057 400.000/400.057 H7 -.063 +.000/+.063 +.040 410.000/410.063 420.000/420.063 430.000/430.063 440.000/440.063 450.000/450.063 H7 +.000/+.063 460.000/460.063 470.000/470.063 480.000/480.063 490.000/490.063 500.000/500.063

Interference Fit Hub Bore Fit* P7 .125 -.079/-.033 -.050 189.921/189.967 199.921/199.967 R7 -.155 -.109/-.063 -.080 209.891/209.937 219.891/219.937 224.891/224.937 R7 -.159 -.113/-.067 -.084 229.887/229.933 239.887/239.933 249.887/249.933 R7 -.178 -.126/-.074 -.094 259.874/259.926 269.874/269.926 279.874/279.926 R7 -.182 -.130/-.078 -.098 289.870/289.922 299.870/299.922 309.870/309.922 314.870/314.922 R7 -.201 -.144/-.187 -.108 319.856/319.813 329.856/329.813 339.856/339.813 349.856/349.813 354.856/354.813 R8 -.260 -.203/-.114 -.135 359.797/359.886 369.797/369.886 379.797/379.886 389.797/389.886 399.797/399.886 R8 -.286 -.223/-.126 -.149 409.777/409.874 419.777/419.874 429.777/429.874 439.777/439.874 449.777/449.874 R8 -.292 -.229/-.132 -.155 459.771/459.868 469.771/469.868 479.771/479.868 489.771/489.868 499.771/499.868

NOTE: Consult Rexnord for all keyless bore fits.

Taper-Lock and Q.D. Bushing Selection Cross Reference In order to cross reference tapered bushing and bore sizes to a coupling selection, the following tables will cover the majority of cases.

Hubs bored for Q.D. or Taper-Lock® bushings will be modified for proper fit with bushing length. Consult Rexnord for s­pecific dimensional data.

Taper-Lock Type

If specific reference to the coupling series or type is not found in the table, i.e. special designs, comparison of the shaft size with the maximum bore table only, will indicate the correct taper bushing in the left side of each table. Other flange style and compression bushings can be used with coupling hubs.

Coupling Size and Type Bushing Size

1108 1215 1310 1610 1615 2012 2517 2525 3020 3030 3535

Max. Bore

DBZ

SV, SF, SN

Series 52

Series 54RDG

AMR, BMR, CMR, ST

28 32 35 41 41 51 63 63 76 76 89

126 163 201 201 201 226 263 263 351 351 401

125 162 200 200 200 226 262 262 350 312 375

125 162 200 200 200 225 262 262 350 312 375

162 200 200 200 225 262 312 312 375 350 450

162 200 200 200 200 262 312 262 375 350 425

NOTE: “C” Dimension will be as listed for all couplings; “F” Dimension will vary according to bushing selection; Consult Rexnord for “F” dimensions and bushings.

36

Q.D. Type Coupling Size and Type

➀

Bushing Size

Max. Bore

DBZ

SV, SF, SN

Series 52

Series 54RDG

Series 71

AMR, BMR, CMR, ST

JA SH SDS SD SK SF E

30 35 42 42 55 63 75

126 163 201 201 263 301 401

125 162 226 226 262 312 375

125 200 225 225 262 350 375

162 200 225 225 312 350 425

150 175 300 300 300 350 462

162 200 200 200 262 312 375

F

90

–

450

450

500

512

450

➀ With shallow keyway. Key supplied with bushing where shallow keyway is furnished.

Rexnord Thomas Couplings Customized Flexible Disc Couplings Designs The following pages illustrate a sampling of the special disc coupling products designed and manufactured by Rexnord for applications requiring special coupling designs; please contact your Rexnord representative.

SN-EL – Extra Long Span

Semi-Reduced Movement – Bolt On Hub

Torsionally Tuned Center Members

Torque Meter Coupling

Electrically Insulated Couplings

Breaker Pin Coupling – Bearing Style

Breaker Pin Coupling – Bushing Style

Clamp Hub Mounting

37

Rexnord Thomas Couplings Customized Flexible Disc Couplings Designs

Brake Drum Hub

Double Disc Packs

Axial Limiting Stops

Slide Coupling 38

Motor-Tachometer Coupling

AMR Bolt-On Inertia Ring

Shrink Disc Hub Mounting

866-REXNORD/866-739-6673 (Within the US) 414-643-2366 (Outside the US) www.rexnord.com

Why Choose Rexnord? When it comes to providing highly engineered products that improve productivity and efficiency for industrial applications worldwide, Rexnord is the most reliable in the industry. Commitment to customer satisfaction and superior value extend across every business function. Delivering Lowest Total Cost of Ownership The highest quality products are designed to help prevent equipment downtime and increase productivity and dependable operation.

Valuable Expertise An extensive product offering is accompanied by global sales specialists, customer service and maintenance support teams, available anytime. Solutions to Enhance Ease of Doing Business Commitment to operational excellence ensures the right products at the right place at the right time.

Rexnord Corporation Rexnord is a growth-oriented, multi-platform industrial company with leading market shares and highly trusted brands that serve a diverse array of global end markets. Process and Motion Control The Rexnord Process and Motion Control platform designs, manufactures, markets and services specified, highly engineered mechanical components used within complex systems where our customers’ reliability requirements and the cost of failure or downtime are extremely high. Water Management The Rexnord Water Management platform designs, procures, manufactures and markets products that provide and enhance water quality, safety, flow control and conservation.

©2013 Rexnord Corporation

2000M 05/13