| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing hardly causing a galling or seizure in a roller and a collar part. SOLUTION: This cylindrical roller bearing 10 comprises an outer ring 12 having a recessed outer ring raceway track 11 on the inside surface; an inner ring 14 having a recessed inner ring raceway track 12 on the outside surface; a plurality of substantially cylindrical rollers 15 arranged between the outer ring raceway track 11 and the inner ring raceway truck 13; and a collar part 16 provided along one of the axial ends of the inner ring raceway track 13. In the roller 15, the outside surface is formed by a protruding base line, and the end surface making contact with the collar part 16 is formed into a protruding spherical surface. The center part in one of the outer ring raceway track 11 and inner ring raceway track 14 and the outside surface of the roller 15 is formed by a first base line having a fixed curvature radius, and the double end side adjacent to the center part is formed by a second base line having a curvature radius as it separates from the other of the outer ring race track 11 and inner ring raceway track 14 and the outside surface of the roller 15. The collar surface 19 of the collar part 16 is formed of a recessed spherical surface. |
