Combination bearing

The utility model discloses a combination bearing, include: inner circle, outer lane, holder and cylindrical roller, inner circle include inner circle main part and inner circle upper cover plate, theouter lane is connected with the bearing mount pad, and inner circle and rotation axis connection, cylindrical roller set up between inner circle main part and the outer lane and between inner circleupper cover plate and the outer lane, for the uniform line contact between inner circle main part, inner circle upper cover plate and outer lane and the cylindrical roller, kept apart by the holder between the adjacent cylindrical roller, the cylindrical roller both ends are chamfer or radius design, and four angles in the pocket hole of cooperation cylindrical roller installation are designed tothe radius on the holder. The utility model discloses can adopt modern processing means such as machining center, digit control machine tool, bearing processing cycle is shortened in quick processing, improves production effic