... and type, Sprag Clutch BearingsSprag Clutch is a one-way freewheel clutch. It resembles a roller bearing, ... are used. When the unit rotates in one direction the rollers slip or free-wheel, ... with very little backlash.Applications: Automatic transmissions, Helicopters, Motorcycle, Starters, Primary drive, Conveyors, Overrunning, Indexing, Backstopping, Hoist load brake. Sprag Clutch bearing one-way ...