Design as Centrifugal Lift-off Sprags (CLS) Type Freewheel Clutch

Centrifugal Lift-off Sprags (CLS) Type Freewheel Clutches are specially design with self and positive locking form of CLS cam/sprags are retain with the help of Torsional springs. Inner race is kept attached with the shaft by key but here the outer race is made fixed with some structure on the machine element for hold backing purpose.

Cam/sprag configuration is such that its center of gravity is offset to its rotational axis. CLS Cam are supported in cage which is connected to Inner ring. Now, when Inner ring rotates, The Centrifugal force is applied at the C.G. of Sprag. When this centrifugal force overcomes the spring force, gap will be generated & freewheeling operation done without contact. The result is a greatly increased service life compared to conventional types. This type of clutches are used where speed of shaft (RPM) is higher.