Formsprag Special Purpose Clutches

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Formsprag Clutch provides superior overrunning clutch technologies

Formsprag Special Purpose Clutches

For more than 50 years Formsprag Clutch has been known as the world’s leading authority for the design and manufacture of long-life overrunning clutches, backstops, bi-directional clutches, and clutch couplings. Formsprag offers the broadest range of both sprag and ramp & roller type overrunning clutches and backstops available globally.

Exceptionally reliable Formsprag solutions are hard at work in many key markets including mining, aerospace & defense, packaging equipment, food processing, material handling and paper converting machinery on applications such as conveyors, rotary & fixed-wing aircraft, pumps, hoists & cranes and machine tools.

General Purpose Clutches

  • Ball Bearing Supported
  • Bearing Envelope Design
  • Not Self-Supporting
  • Sleeve Bearing Supported

Special Purpose Clutches

  • CDU Series
  • FS 100 200 300 Series
  • FSD and HBG Series
  • HPO Series
  • RL Series
  • SB Pump Backstop
  • SBI Series

Backstopping Clutches

  • Backstops – Shaft Mount Gearboxes
  • FHB Backstopping Clutch
  • HFB & VFB Series
  • Model HSB Backstopping Clutch
  • LCB Series Fan Backstops
  • LLH Holdbacks
  • RSBW Backstop

Modular Building Block Clutches

  • AL and ALM
  • GFR/GFRN Clutches
  • RIZ & RINZ Clutches

Clutch Couplings

  • AL..KEED2 Series Clutch Couplings
  • AL..KMSD2 Series Clutch Couplings
  • FW Series
  • FWW Series Clutch Couplings
  • RIZ..ELG2 Series Clutch Couplings


  • Axial Restraint Keys
  • Axial Restraint Set Collars
  • Building Block Design Covers
  • FSO Oil Reservoirs HSB
  • FSO OSHA Covers
  • FSO Stub Shaft Adapters
  • FSO Torque Arms

More information please click Formsprag clutches

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