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A row of GMN parts: a sprag clutch, labyrinth seal, and a backstop clutch.

GMN Complete Sprag Clutch: Designed for High-Torque Applications

Stats at a Glance

  • Operating Temp: 212°F (100°C) or 284°F (140°C)
  • Torque: 60 to 588 Nm
  • RPM: 1,000 to 10,100
  • Seal Options: Rubber Seals or No Seals
  • Lubrication: Oil or Grease
  • Width: 27 or 34 mm
  • Bore (ID) Sizes: 10 to 60 mm
  • Inner Ring Options: Press fit or Keyway
  • OD Size Range: 31 to 110 mm
  • Outer Ring Options: Press fit, Outer groove, Mounting tab

Find the Right One-Way Bearing

If you don’t know the difference between all our complete clutch units (FPD, FND, RA, FP and FN) we can help.

Answer these two questions to find the high torque one-way bearing that’s best for your application.

P.S. You can skip this & contact an engineer to find the right clutch.

A GMN FND 453 Z sprag clutch.

1. Do You Need an Inner Ring Keyway?

If Yes! Then check out these products:

  • FND Series: RPM: 1,000 to 1,700 | Torque: 161 to 588 Nm (comes w/ seals & keyway)
  • FN Series: RPM: 2,500 to 4,800 | Torque: 160 to 588 Nm (no seals)
  • RA Series: RPM: 1,000 to 1,700 | Torque: 161 to 543 Nm (w/ mounting tab)

Our inner ring keyway is designed for a light press fit to support torque transfer.

GMN rubber seals close up.

2. Do You Need Rubber Seals?

If Yes! Then check out these products:

  • FPD Series: RPM: 1,000 to 2,000 | Torque: 84 to 588 Nm (no keyway)
  • FND Series: RPM: 1,000 to 1,700 | Torque: 161 to 588 Nm (comes w/ seals & keyway)

Effective round, rubber seals protect the one-way clutch bearing from external contamination and keep oil inside.

GMN FPN 453 Z sprag clutch.

3. No Keyway & No Rubber Seals?

If this is you, then check out this product:

  • FP Series: RPM: 2,500 to 10,100 | Torque: 53 to 588 Nm

Match Your Requirements to the Right High Torque One-Way Bearing

If you’re still not sure which clutch is right for you contact an engineer.

No Keyway + Yes Seals: FPD Clutches
No Keyway + No Seals: FP Clutches
Yes Keyway + Yes Seals: FND Clutches
Yes Keyway + No Seals: FN Clutches
Yes Keyway + Yes Mounting Tab: RA Clutches

Get Price & Availability

Already know the one-way bearing specs you need? Send them to us and we’ll send you back our pricing & availability… Fast!

Request Your Quote

FPD One-Way Sprag Clutch Bearing

Part Number Spring Type Bore Diameterd [mm]Outer DiameterD [mm]WidthW [mm]Nominal TorqueT [N⋅m]Nominal TorqueT [ft⋅lb]  

FP One-Way Sprag Clutch Bearing

Part Number Spring Type Bore Diameterd [mm]Outer DiameterD [mm]WidthW [mm]Nominal TorqueT [N⋅m]Nominal TorqueT [ft⋅lb]  

FND One-Way Sprag Clutch Bearing

Part Number Spring Type Bore Diameterd [mm]Outer DiameterD [mm]WidthW [mm]Nominal TorqueT [N⋅m]Nominal TorqueT [ft⋅lb]  

FN One-Way Sprag Clutch Bearing

Part Number Spring Type Bore Diameterd [mm]Outer DiameterD [mm]WidthW [mm]Nominal TorqueT [N⋅m]Nominal TorqueT [ft⋅lb]  

RA Complete Sprag Clutch Series

Part Number Spring Type Bore Diameterd [mm]Outer DiameterD [mm]WidthW [mm]Nominal TorqueT [N⋅m]Nominal TorqueT [ft⋅lb]  
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