E2.YET 205 Bearing Inserts E2.YET 205. SKF YET 2 bearing inserts fit to the shaft using an eccentric collar. Locking is achieved by turning the eccentric collar in the direction of rotation. The collar can be secured further using a grub screw. Designed for use where the direction of rotation is constant. YET Y-bearings are fitted with ’Superagriseals’ for protection and the extended ring has been zinc plated.