| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing capable of receiving a radial load, axial loads in both directions, and a moment load by one bearing capable of improving a characteristic of resistance against spin wear, providing high moment rigidity, and reducing torque. SOLUTION: This rolling bearing consists of a bearing ring 1 having a raceway surface 4, a bearing ring 2 having a raceway surface 5, and a rolling body 6 incorporated between inner and outer rings 1 and 2. The raceway surface 4 of at least one bearing ring 1 is composed of two raceway surfaces 4a, 4b, which are constituted to have large diameters than a radius of the rolling body 6. Each rolling body is constituted such that an outside diameter 6a which becomes a rolling contact face has a curvature in the axial direction and is arranged in a crossing manner alternately on circumference. The outside diameter 6a of each rolling body 6 comes into contact at two points in total, namely, at one point of the raceway surface 4a of the bearing ring 1 on one side and the raceway surface 5 of the bearing ring 2 on the other side which oppose mutually and at one point of the raceway surface 4b of the bearing ring 1 on one side and the raceway surface 5 of the bearing ring 2 on the other side, respectively.
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