Types RSBI, RBI, RAZ, RIZ, CR & RS/BF - Contact-Free Overrun Clutches

These are basically similar to conventional sprag clutches, but the sprags have their centre of gravity offset to the pivot point such that in the overrun mode the sprag elements are thrown out of contact with the stationary race by centrifugal force These clutches are for applications involving long periods of high speed freewheeling, when no wear occurs, such as barring motors, starter drives, pump and motor backstops. Three basic types of unit are available.