SB Chrome Steel Series
SB Style Chrome Steel Insert Bearings have an inner ring that extends on one side of the bearing to provide extra shaft support. Insert Bearings have chrome steel races with steel balls. Boca Bearings heavy duty insert bearings are used for mounting on shafts without the need for shoulders or adapters. The bearing is locked in place through set screws or a locking collar. Insert bearings can be slip fit directly onto the shaft.