| 摘要 |
<p>A support point bearing unit (100, 200, 300, 400) stabilizes torque of a swing arm by reducing a variation in a rolling body load to facilitate control of the load. Either an inner raceway surface (141, 142, 120, 121, 110, 111) or an outer raceway surface (122) with which balls (109) make contact is constructed from two contact surfaces (circular conical raceway surfaces (120, 121) (141, 142)) having a circular conical surface shape and crossing each other. A ball (109) is in contact with contact surfaces, which have a circular conical surface shape, at three points.</p> |
