Track Roller Ball Bearings are also sometimes called Cam Rollers or Track Ball Bearings. They are specialty products designed for conveyor systems, cam drives, tracks, etc. These applications require accomodation of heavy loads in addition to shock loads. Often they must allow for misalignment between the bearing and the track and are subsequently produced with crowned running surfaces on the outside of the outer ring. There outer rings are also thick-walled to accommodate the anticipated heavy operational loads. They are also sometimes available with a flat running surface if misalignment is not a consideration.
