Thomas ® Series 71 - 8

Applications include: - pumps- compressors - general purpose machinery

Precision. Power. Performance.

You want a trusted name when it comes to providing engineered power transmission products that improve productivity and effi ciency. Rexnord provides superior products for your industrial applications world wide. We work closely with you to reduce maintenance costs, eliminate redundant inventories and prevent equipment downtime.

Rexnord ® Thomas ® Disc CouplingsSeries 71 - 8Spacer style fl exible metallic disc coupling designed for your pump and compressor applications. The simple three piece design and piloted center member provide fast installation and repeatable bal-ance signifi cantly reducing your installation and service time.

ATEX Certifi ed II 2G c T5

A MAX.BORE

MAX.BORE

LARGEHUB

STANDARDHUB

EXTENDEDHUBG

B C B1 B2

EMIN.

Contact

Features

Unitized and piloted centermember

Bolt on hubsJacking bolt featureStainless Steel discs & 8 bolt design standard

Benefi ts

Ease of installation;repeatable balanceMeets API specifi cationsOversize bore capacityEase of installationMeets API specifi cations high misalignment and axial capacity

REXNORD NV, BelgiumDellingstraat 552800 MechelenPhone: +32 / 70 22 33 66Fax: +32 / 70 22 33 67E-mail: Customerservice.Belgium@rexnord.comwww.rexnord.eu

Thomas ® Series 71 - 8

Max. RPM Max. RPM Max. Continuous Peak Overload Weight WR2 Change Axial Coupling Not Torque Torque Weight Change Per WR2 Per mm of „C“ Capacity Size Balanced Balanced (Nm) (Nm) (Kg) mm of „C“ (Kg) (kgm2) (kgm2/mm) (mm)

225 7 500 14 000 1 976 3 951 12.62 0.0068 0.0375 1.233E-05 ±0.9144 262 6 800 12 500 3 706 7 413 19.52 0.0082 0.0775 2.246E-05 ±1.0922 312 6 200 11 500 5 803 11 605 30.42 0.0098 0.1697 3.848E-05 ±0.1.2954 350 5 700 10 500 7 552 15 105 43.13 0.0134 0.3017 6.486E-05 ±1.4224 375 5 200 9 800 11 323 22 646 60.84 0.0188 0.5220 1.063E-04 ±1.5748 425 5 000 9 300 15 161 30 323 76.73 0.0218 0.7654 1.451E-04 ±1.7018 450 4 700 8 700 16 979 33 958 99.88 0.0284 1.1763 2.074E-04 ±1.8288 500 4 200 7 900 27 817 55 633 154.81 0.0379 2.3525 3.617E-04 ±2.028 550 3 900 7 300 37 300 74 599 215.65 0.0474 4.0759 5.737E-04 ±2.3368 600 3 600 6 800 48 973 97 945 296.46 0.0545 7.0604 7.960E-04 ±2.5908

Coupling Stocked „C“ Dimensions B & B1 Hub B2 Hub A B B1 B2 Min. C Max. E G SIZE 140 180 250 Max. Bore Max. (mm) (mm) (mm) (mm) (mm) (mm) (mm)

225 • • • 80 106 151.64 63.50 79.25 77.72 120.65 106.43 115.82 262 • • • 95 128 174.75 77.72 93.73 90.42 139.70 119.13 131.83 312 • • 112 145 203.20 90.42 109.47 104.65 152.40 146.05 160.27 350 • • 130 166 227.08 98.55 120.65 114.30 171.45 165.10 179.32 375 • 144 185 252.48 112.78 134.87 131.06 184.15 181.10 201.68 425 • 158 203 273.05 123.95 149.35 139.70 190.50 188.98 214.38 450 • 170 214 293.62 128.52 157.23 152.40 222.25 212.85 235.71 500 196 248 333.25 150.88 179.32 171.45 260.35 231.90 266.70 550 215 373.13 166.62 198.37 0.00 292.10 254.00 292.10 600 242 416.05 182.63 214.38 0.00 317.50 298.45 335.79

P50-

002-

EN-1

Thomas flexible Disc couplings are non-lubricated, metal flexing couplings, utilising non-wearing components for the transmission of torque and the accommodation of unavoidable shaft misalignment. Rexnord Thomas SR 71 Spacer style flexible metallic disc coupling designed for your pump applications. The simple three piece design and piloted center member provide fast installation and repeatable balance significantly reducing your installation and service time.

PumpsGeneral propose machinery

Ex II 2GD T5

Precision, Power, Performance.

Applications include:

Features Benefits

Thomas SR71

You want a trusted name when it comes to providing engineered power transmission products that improve productivity and efficiency. Rexnord provides superior products for your industrial applications world wide. We work closely with you to reduce maintenance costs, eliminate redundant inventories and prevent equipment downtime.

Unitized and piloted centermember

Bolt on hubsJacking bolt featureStainless Steel discs

standard

Ease of installation; repeatable balance

Meets API specificationsOversize bore capacityEase of installationMeets API specifications with

high misalignment and axial capacity

*weight and inertia on maximum bore and minimum c

TorqueDemands

Driven machine

Typical application for electirc motor or turbine driven

equipment

TypicalServiceFactor

Constant torque such as Centrifugal Pumps,

Blowers, and Compressors

Continuous duty some torque variations including Plastic Exruders, Forced

Draft Fans.

Light shick loads from Metal Extruders, Cooling

Towers, Log Haul

Modernate shock loading as expected Stone

Crusher, Vibrating Screen

Heavy shock load with somenegative torques

from Reciprocating Pumps, Compressors

1,0

1,5

2,0

2,5

ConsultRexnord

Engineering

D1 / D2 D3 Q #mTn n max max max A E L L2 L3 N max J #J m ChangeNm min-1 mm mm mm mm mm mm mm mm mm kgm kgm / m kg kg / m

150 105 9000 38 64 91 12,3 33 43 41 59 52 0,0032 0,0004 3,1 1,7175 185 9300 50 73 106 12,6 40 52 46 72 65 0,006 0,0010 4,2 2,5225 350 7700 58 87 125 12,3 51 64 52 85 79 0,012 0,0030 6,2 3,4300 820 6800 80 110 152 15,1 67 83 70 113 105 0,036 0,0070 12 4,6350 1520 6200 95 120 171 17,3 79 95 76 134 127 0,076 0,0136 19 7,5375 2200 5650 100 137 194 17,5 83 102 83 144 135 0,125 0,0187 25 7,7412 2540 5350 110 145 203 21,6 92 111 92 155 146 0,180 0,0334 32 10,7462 4570 5000 130 166 229 23,6 105 127 105 174 160 0,328 0,0536 46 14,3512 6220 4700 140 187 255 23,6 114 137 114 194 179 0,540 0,856 61 18,5562 9500 4350 155 200 279 25,9 127 152 127 215 195 0,890 0,120 84 22,9600 10400 4150 165 220 298 31,2 133 162 133 223 211 1,250 0,202 104 31,3

Coupling SIZE

SR71

SR71

B Cmin minmm mm 100 140 180 250 300 400 3,5 4,375 5 5,5 7 7,5 8 9

150 154 87 167 207 247 317 367 467 156 178 194 206 244 257 270 295175 166 87 179 219 259 329 379 479 168 191 206 219 257 270 283 308225 189 87 202 242 282 352 402 502 191 213 229 241 279 292 305 330300 235 102 273 313 383 433 533 245 260 273 311 324 337 362350 283 124 299 339 409 459 559 286 298 336 349 362 387375 292 127 305 345 415 465 565 292 305 343 356 368 394412 400 156 424 494 544 644 422 434 447 473462 387 178 389 459 509 609 387 400 412 438512 406 178 408 478 528 628 406 419 432 457562 445 191 504 554 654 445 457 483600 495 229 516 566 666 495

Dimension ”B” coupling overall length (mm)ISO D.B.S.E. (mm) Ansi D.B.S.E. (in)

D.B.S.E. Combinations for ISO and ANSI pumps

Coupling SIZE

Thomas ® SR 54 RDG

Applications include: - pumps- compressors - general purpose machinery- paper machines

Precision. Power. Performance.

You want a trusted name when it comes to providing engineered power transmission products that improve productivity and efficiency. Rexnord provides superior products for your industrial applications world wide. We work closely with you to reduce maintenance costs, eliminate redundant inventories and prevent equipment downtime.

Rexnord ® Thomas ® Series 54 RDG CouplingReduced diameter close coupled flexible metallic disc coupling with high power density. The split piloted center member design provides high speed and torque ratings while permitting service of the coupling with out moving the hubs or connected equipment.

ATEX Certified II 2G c T5

Thomas 54RDG Coupling Offset .indd 1Thomas 54RDG Coupling Offset .indd 1 12.09.2007 09:58:3312.09.2007 09:58:33

Contact

Features

Axially split design

Piloted split center spool

Stainless Steel Discs standard

Benefits

Ease of installationClose coupledMeets API 610 10th edition when specifi ed High torque capacityHigh speed capacityCorrosion resistantMeets API when specifi ed

REXNORD NV, BelgiumDellingstraat 552800 MechelenPhone: +32 / 70 22 33 66Fax: +32 / 70 22 33 67E-mail: Customerservice.Belgium@rexnord.comwww.rexnord.eu

A G

HB

N

C1

C

C2

FF1

F2

MAX.BORE

EXTERNAL

MAX.BORE

INTERNAL

Thomas ® SR 54 RDG

Max. RPM(1) 54RDG Max Peak Continuous Overload Weight(2) WR(2) Axial Not Torque Torque Weight(2) WR2 Capacity SIZE Balanced Balanced (Nm.) (Nm.) (Kg.) (Kgm2) (mm)

125 4.600 10.500 305 610 3.1 0.0037 ±0.91 162 4.200 9.700 604 1.208 4.2 0.0070 ±0.91 200 3.800 8.600 1.185 2.371 7.3 0.0196 ±0.91 225 3.700 8.400 1.976 3.951 8.6 0.0249 ±0.91 262 3.600 7.400 3.706 7.413 14.1 0.0562 ±1.09 312 3.000 6.700 5.803 11.605 20.9 0.1124 ±1.29 350 2.800 6.200 7.552 15.105 30.0 0.2016 ±1.42 375 2.500 4.800 11.323 22.646 40.0 0.3394 ±1.57 425 2.300 5.400 15.161 30.323 53.1 0.5208 ±1.70 450 2.200 5.000 16.979 33.958 69.9 0.7871 ±1.82 500 2.000 4.600 27.817 55.633 101.7 1.4542 ±2.02 550 1.900 4.200 37.300 74.599 147.1 2.6246 ±2.33 600 1.800 3.900 48.973 97.945 198.4 4.3597 ±2.59 Larger sizes to 194.600 Nm MCT available upon request (1) Contact Rexnord for explanation of RPM limits and balancing recommendations (2) Weight and WR2 with standard length hubs, maximum bore and standard C

* Non-bored hubs available upon request. **One internal and one external hub. ***Two external hubs.

Max Bore* Max Bore* A B C C1** F F1** H N G C2*** F2*** SIZE Internal (mm) External (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)

125 30 34 97 48 3.0 44.5 99 125 4.3 6.9 44 85.9 152.4 162 42 50 114 48 3.0 45.0 99 137 4.3 7.4 59 86.9 175.8 200 58 58 141 54 3.0 49.8 111 156 5.6 9.1 83 96.5 201.2 225 64 70 149 56 3.0 51.6 114 174 5.6 9.1 89 100.1 233.2 262 73 84 175 66 4.8 61.5 136 200 6.4 11.9 105 118.1 264.4 312 93 97 199 72 4.8 66.5 149 225 7.6 12.7 127 128.3 300.0 350 100 110 223 83 6.4 77.7 173 256 8.6 13.7 140 149.1 339.6 375 112 120 247 90 6.4 82.8 187 275 9.9 15.0 154 159.3 362.5 425 120 130 267 101 6.4 91.7 208 300 10.7 15.7 167 177.0 392.9 450 130 140 287 114 7.9 105.4 236 334 11.9 18.0 178 202.9 431.5 500 137 146 327 121 7.9 109.7 251 358 12.7 19.8 200 211.6 465.6 550 150 166 367 136 9.7 123.7 282 400 14.7 23.1 222 237.7 517.1 600 166 176 406 152 9.7 137.2 314 442 17.0 24.9 236 264.7 569.5

P50-

001-

EN-1

Typical Application for Electric Motor or Turbine Driven Equipment

Constant torque such as centrifugal pumpsblowers and compressors

Continuous duty with some torque variations including plastic extruders and forced

draft fans

Light shock loads from metal extruders, cooling towers and log haulers

Moderate shock loading as expected from a car dumper, stone crusher, vibrating screen

Heavy shock load with some negative torques from reciprocating pumps, compressors,

reversing turnout tables

Frequent torque reversals such as recipro-cating compressors with frequent torque

reversals which do not necessarily include reverse rotations

1.0

Typical Service Factor

1.5

2.0

2.5

3.0

Consult Rexnord Engineering

Torque Demands Driven Machine

Thomas 54RDG Coupling Offset .indd 2Thomas 54RDG Coupling Offset .indd 2 12.09.2007 09:58:5312.09.2007 09:58:53