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Series XTSR71 Spacer Type Coupling with AdaptersRexnord Thomas Flexible Disc Couplings Catalog (#2000)The optimized 3-piece design allows for the smallest possible package for an application. The hubs are pilot fittedto 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 economicaloption on various critical and high speed applications. Common engineered solutions are available such as torqueoverload protection, electrically insulated, spark resistant and alloy construction.The XTSR71 couplings are designed for spacer type coupling critical applications including API applications. TheXTSR71 couplings are API 610 and ISO 14691 compliant, API 671 (ISO 10441) compliant when specified, and ATEX II2GD c T6 certified. Common applications include motor and turbine driven pumps, compressors, fans, synchronizedrollers, wire feeders and blowers.ConstructionHubs and Center assembly: Carbon steelBolts: Alloy steelDisc Packs: Stainless steel. Max misalignment is 2/3 per disc pack for sizes 494 & 644, 1/2 per disc pack forsizes 726-996, and 1/3 per disc pack for sizes 1088-5258.Coatings Available: Manganese Phosphate provided as standard. Other coatings available upon request.A2 G2 MAXor orA3 G3 BORESTANDARDHUBLARGEHUB14EKEYWAYKEYWAYB2 or B3MAXG ABORECBNOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.Revised October 2017; Supersedes May 2016

Series XTSR71 Spacer Type Coupling with AdaptersRexnord Thomas Flexible Disc Couplings Catalog (#2000)Example Selection:1.Select coupling size 1088 for 19,000 lb·in torque and 2.5 in pump shaft diameter.2.Select XXL 2nd hub for 3.5 in motor shaft diameter.3.Therefore, coupling is a 1088 XTSR71 XXL.1088 XTSR71 XXL has one hub with 2.88 in max bore and one hub with 4 in max bore.General Coupling DataAn optional one size larger XL hub or two sizes larger XXL hub is available to increase bore Max.Cont.Torque(lb in) 00 StdHubMax. BoreXLHubMax. BoreXXL HubMax. 0617.24 16.5017.4819.8421.4622.64–– MaxCounterBore E(in) 0.05 0.07 0.05 0.06 0.07 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.19 0.20 0.22 0.23 20.19 NotBalancedStdA(in) Axial Capacity(in)Max. Speed (rpm)StdWeight(lb)WeightChangePer inof 3.1 WR2(lb 185,000260,000341,000All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices.Weight and WR2 of couplings with standard adapters at maximum bore and minimum “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.Peak Overload Torque (lb in) is twice the Maximum Continuous Torque.Consult Rexnord on C lengths greater than 34.99" for sizes 2698-5258.If larger C lengths are required than the listed maxes, refer to XTSRLS71 page.Revised October 2017; Supersedes May 2016NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.15

Series XTSR71 Spacer Type Coupling with AdaptersRexnord Thomas Flexible Disc Couplings Catalog (#2000)Component Part NumbersInch Standard C Dimensions ub CapScrewKitXLHub 491000115010001151 ––––––––– Standard Center Member STD, XL, ––––––––––NOTE: The XXL hub capscrew kit is the same hub capscrew kit as the next size XL. For example, the 996 XXL hub capscrew kit is 10001615.Metric Standard C DimensionsSize100mm140mm180mm250mm Standard Center Member STD, XL, XXL494 10003238 10003239644 10003243 10003244726 10000801 10000860826 10000802 10000861996 10000862 ––– Disc 61000010710000108100001091000011010000111Reference NOTE: An optional one size larger XL hub or two sizeslarger XXL hub is available to increase bore capacity. 16 NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.Revised October 2017; Supersedes May 2016

Series XTSRLS71 Spacer Type Coupling with AdapterRexnord Thomas Flexible Disc Couplings Catalog (#2000)The XTSRLS71 couplings are designed for spacer type coupling critical applications including API applications. The optimized3-piece design allows for the smallest possible package for an application. The hubs are pilot fitted to the factory assembledcenter member. The design allows for repeatable installations without special tooling. Additional modifications may be made toreduce coupling weight, or special mountings to make it an economical option on various critical and high speed applications.Additional engineered modifications available to provide unique application solutions.The XTSRLS71 couplings are API 610 and ISO 14691 compliant when specified, compliant with API 671 (ISO 10441) whenrequested. ATEX II 2GD c T6 certified. Common applications include motor and turbine driven compressors, fans, synchronizedrollers, wire feeders, generators and blowers.ConstructionHubs and Center assembly: Carbon steel with welded carbon steel tubeBolts: Alloy steelDisc Packs: Stainless steel. Max misalignment is 1/2 per disc pack for sizes 726-996,and 1/3 per disc pack for sizes 1088-4588.Coatings Available: Consult RexnordBB2 or B3CNAA2 or A3GG2 or G3ERevised October 2017; Supersedes May 2016NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.21

Series XTSRLS71 Spacer Type Coupling with AdapterRexnord Thomas Flexible Disc Couplings Catalog (#2000)Example Selection:1.Select coupling size 1088 for a 19,000 lb·in torque and 2.5 in pump shaft diameter.2.Select XXL 2nd hub for 3.5 in motor shaft diameter.3.Operation speed is 1,800 rpm.4.DBSE is 78.75 in.5.Therefore, coupling is a 1088 XTSRLS71 XXL to accommodate long span need.A 1088 XTSRLS71 XXL has one hub with 2.88 in max bore and one hub with 4 in max bore.The max DBSE is 88 in at 1,800 rpm.General Coupling Data SizeMax.Cont.Torque(lb in)Std HubMax. BoreXL HubMax. BoreXXL HubMax. BoreMin.C(in)Axial Capacity(in)MaxCounter 4.6934.9947.6248.0948.1348.8549.3449.3950.1147.13 0.05 0.06 0.07 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.19 0.20 6910.6911.7312.3713.9714.8515.6417.72 421.4622.64 22StdWeight(lb)WeightChangePer inof 405.987.678.1710.9 WR2(lb All Thomas disc couplings meet NEMA frame sleeve bearing motor specifications without modification or the addition of end-float restricting devices.Weight and WR2 of couplings with standard adapters at maximum bore and minimum “C” dimension listed.Consult Rexnord for minimum rough bore sizes.Peak Overload Torque (lb in) is twice the Maximum Continuous Torque.If shorter C lengths are required than the listed minimums, refer to XTSR71 page.NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request.Revised October 2017; Supersedes May 2016

Series XTSRLS71 Spacer Type Coupling with AdapterRexnord Thomas Flexible Disc Couplings Catalog (#2000)Maximum C at Given rpm (in)*Size3,600 rpm3,000 rpm1,800 rpm1,500 rpm1,200 411811972204588134146187204228* For API-671 required couplings, consult Rexnord for maximum spans.NOTE: Consult Rexnord for intended applications at speeds not covered in the table.1,000 rpm900 rpm750 rpm720 rpm600 rpm500 ent Part NumbersSize StandardHub CapScrew KitXL Hub CapScrewKit StandardAdapterXLAdapterXXLAdapterDisc PackHardwareKit 001041000010510000106100001071000010810000109 Reference Revised October 2017; Supersedes May 2016 NOTE: Dimensions subject to change. Certified dimensions of ordered material furnished on request. 23