The GF series, manufactured by C.T.S., is a type of overrunning clutch made of ball bearings. The series is used as an intermittent feed, non-return and over speed units. There is an oil circulation to lubricate the freewheels. The device is used in order to return or intermittent the feed applications. They are placed outside on the drive shafts. The transmission torque is given by the lever placed on the outer part.
These types of wheels are greased for life and comes with a gasket.