Three-Bolt Flange Pressed Steel Locking Collar Unit features a Pressed steel housing made from mild steel strips and are zinc plated. This unit has been equipped with a chrome steel locking collar insert ball bearing which uses a machined locking collar with two set screws to tighten onto the shaft. These units provide simple and effective bearing arrangements capable of accommodating moderate misalignment from mounting errors. They are easily mounted onto commercial shafting and are particularly useful where fabricated machine frames are employed.