Stieber Freewheels Clutch
Type CSK is a sprag type freewheel integrated into a 62 series ball bearing (except sizes 8 and 40). It is bearing supported, delivered grease lubricated and protected against dust of more than 0.3mm. The use of additional "Nilos" type seals is recommended especially when the working temperature exceeds 50 degree C. Oil bath lubrication is also possible.
All the CSK versions are equipped with "Form chromed" sprags. The process increases several times the overrunning life time.
Torque transmission is ensured by a press fit assembly into a rigid outer housing with N6 tolerance, and onto a shaft with n6 tolerance. The initial bearing radial clearance is set at C5, and is reduced if using the press fit as specified.