... : Bearing steel, 4.Various size and type, Sprag Clutch BearingsSprag Clutch is a one-way freewheel clutch. It resembles a roller bearing, but instead of ... -eight shaped sprags are used. When the unit rotates in one direction the rollers slip or free-wheel, but when a ... , Primary drive, Conveyors, Overrunning, Indexing, Backstopping, Hoist load brake. Sprag Clutch bearing one-way freewheel clutch