G-Series – GC Model Key Features.

Standard Design Features:

  • Interchangeable with Rexnord Thomas and TB Woods. Positioned to be interchangeable with the gas compression couplings from Rexnord Thomas and TB Woods with similar mass, inertia, and stiffness
  • Stainless steel discs and alloy steel hubs are standard
  • Improved ease of installation with unitized disc packs
  • Reduced disc flaring and disc flexing forces with scalloped discs

Custom Design Options:

  • Ability to tune mass, inertia, and stiffness with custom design options
  • API compliant versions available
Download G-Series Installation Manual

Diagram G-Series – GC Model

G-Series – GC Model Competitive Replacement Guides.

G-Series Competitive Replacement Guide for GA/GC

View the guide to properly identifying the PSC Coupling size to replace your current disc coupling brand. Custom options are also available to meet your exact needs.

View Replacement Guide

G-Series – GC Model Specific Details.

Ratings

Coupling SizeContinuous TorquePeak TorqueMax. RPMMax. Bore KeyedMax. Bore KeylessMisalignment Capacity 1Weight 2Inertia 2
(in-lbs)(Nm)(in-lbs)(Nm)(in.)(mm)(in.)(mm)Angular (deg)Axial (in)Axial (mm)(lbs.)(kg)(lb-in^2)(kg-m^2)
GC26221,0002,37325,2002,8472,5003.25082.63.62592.10.33±0.043±1.0954241,4700.430
GC31236,0004,06743,2004,8812,5003.87598.44.375111.10.33±0.051±1.3070321,7900.524
GC35052,8005,96663,4007,1632,3004.250108.04.750120.70.33±0.056±1.4284382,0000.585
GC37579,4008,97195,30010,7672,2004.625117.55.250133.40.33±0.062±1.57102462,4200.708
GC42588,0009,943105,60011,9312,0005.000127.05.625142.90.33±0.067±1.70121552,8900.846
GC450136,10015,377163,40018,4621,9005.250133.46.000152.40.33±0.072±1.83145663,6001.05
GC500200,80022,687240,90027,2181,8006.000152.46.750171.50.33±0.082±2.0825211413,0003.80
GC550275,10031,082330,10037,2961,8006.750171.57.500190.50.33±0.092±2.3433915418,0005.27
GC600358,90040,550430,70048,6631,8007.375187.38.250209.60.33±0.102±2.5942019021,5006.29
GC700456,50051,578547,80061,8931,5008.375212.79.375238.10.33±0.115±2.9262028138,30011.2
GC750644,90072,864773,90087,4391,5009.000228.610.125257.20.33±0.125±3.1871632545,70013.4
GC800813,80091,947976,500110,3301,2009.750247.711.000279.40.33±0.136±3.4589840762,20018.2
GC850898,700101,5391,078,400121,8431,10010.250260.411.625295.30.33±0.144±3.661,05047678,20022.9
GC9251,281,300144,7671,537,500173,7141,00011.250285.812.750323.90.33±0.156±3.961,320599110,00032.2
1 Angular values represent misalignment per disc pack. Axial values represent misalignment for double flexing coupling.
2 Weight and inertia values represent total coupling assembly with maximum keyed bore diameter and standard flywheel adapter ("FW" Std.) diameter.

Dimensional Data

Coupling SizeABHLCOLFW Std.F
(in)(mm)(in)(mm)(in)(mm)(in)(mm)(in)(mm)(in)(mm)(in)(mm)
GC2626.88174.84.50114.32.8873.24.47113.57.35186.718.375466.730.4411.2
GC3128.12206.25.44138.23.3885.95.34135.68.72221.518.375466.730.5012.7
GC3509.12231.66.00152.43.7595.35.89149.69.64244.918.375466.730.5012.7
GC37510.06255.56.50165.14.00101.66.62168.110.62269.718.375466.730.5614.2
GC42511.00279.47.00177.84.25108.07.18182.411.43290.318.375466.730.6215.7
GC45011.88301.87.44189.04.50114.37.68195.112.18309.418.375466.730.6917.5
GC50013.44341.48.38212.95.00127.08.75222.313.75349.326.500673.100.7519.1
GC55015.00381.09.44239.85.50139.79.89251.215.39390.926.500673.100.8822.4
GC60016.75425.510.31261.96.00152.410.89276.616.89429.026.500673.101.0025.4
GC70018.94481.111.75298.57.00177.812.48317.019.48494.828.875733.431.0025.4
GC75020.62523.712.62320.57.25184.213.54343.920.79528.128.875733.431.1228.4
GC80022.38568.513.75349.37.75196.914.74374.422.49571.228.875733.431.2531.8
GC85023.75603.314.50368.38.25209.615.86402.824.11612.428.875733.431.2531.8
GC92525.75654.115.88403.49.00228.617.24437.926.24666.528.875733.431.3835.1

Available Adapters

Coupling SizeStandard Adapter Diameter ("FW") Tolerances (in / mm) & Available Adapter Sizes
8.500
8.495
9.500
9.495
10.375
10.370
12.375
12.370
13.875
13.870
18.375
18.370
20.375
20.370
22.500
22.495
26.500
26.495
28.875
28.870
215.90
215.77
241.30
241.17
263.53
263.40
314.33
314.20
352.43
352.30
466.73
466.60
517.53
517.40
571.50
571.37
673.10
672.97
733.43
733.30
GC262AAAAASAA
GC312AAAASAA
GC350AASAA
GC375AASAA
GC425ASAAA
GC450SAAA
GC500AAASA
GC550AAASA
GC600AAASA
GC700AAAS
GC750AS
GC800AS
GC850S
GC925S
S = Standard adapter sizes.     A = Available adapter sizes.

Flywheel Bolting

Standard Adapter "FW" Dia.SAE BoltingHeavy Duty Bolting
Bolt Circle Dia.Qty. of holesHole Dia.Bolt Circle Dia.Qty. of holesHole Dia.
(in)(mm)(in)(mm)(in)(mm)(in)(mm)(in)(mm)
8.500215.907.875200.0360.348.67.500190.5080.4110.4
9.500241.308.750222.2580.348.68.625219.0880.4711.9
10.375263.539.625244.4860.4110.49.500241.3080.4711.9
12.375314.3311.625295.2880.4110.411.500292.1080.5313.5
13.875352.4313.125333.3880.4110.412.500317.5080.6616.8
18.375466.7317.250438.1580.5313.516.750425.4580.7819.8
20.375517.5319.250488.9580.5313.518.500469.9080.9123.1
22.500571.5021.375542.9360.6616.820.500520.7081.0326.2
26.500673.1025.250641.35120.6616.824.500622.30121.0326.2
28.875733.4327.250692.15120.7819.826.875682.63121.0326.2
3 Flywheel mounting hardware is not supplied with coupling.

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  • Alloy hub and stainless steel disc are standard
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What Sets Us Apart.

Alignment Driven Success.

Our expertise in flexible disc couplings resolves the challenges of your demanding applications. We bring innovation to disc coupling design, integration, and customer support that make your life easier.

Why PSC?