Formspag Clutch Backstops

Intended for use as backstops on the high-speed shaft or intermediate shaft of reducers and as holdbacks on the head shaft of conveyors.

Models HFB and VFB are backstopping clutching designed to prevent reverse rotation of shafts.

Models LCB-200 and 400 are economical, low-torque clutches designed to prevent problems associated with windmilling in fan applications.

Formsprag Long Life Holdbacks (LLH) are designed for use on conveyor heads hafts, bucket elevators, pumps.

Model RSBW is a specialized backstop based on a DC sprag type dual cage retainer assembly.

Formsprag Clutch has been designing and manufacturing backstops for use in shaft mount gearboxes for over 50 years. View Parts Catalogue

Model FHB is a high speed, centrifugal throw-out (C/T) Sprag type backstop with internal sealed ball bearings that is maintenance free.