| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cage of a roller bearing capable of extending the service life of the bearing. <P>SOLUTION: A column part 15a provided in the cage includes a pair of inclined parts slantingly extending to the rotational axis direction of the cage. Side wall surfaces of a pocket in the pair of inclined parts have areas of extending along the rotational axis direction of the cage, that are, roller guide parts for guiding a roller. In the roller guide part, both end part areas in the rotational axis direction of the cage have a pair of projection parts 37a and 37b each formed by projecting a part of the side wall surface in the peripheral direction so that the side wall surface forms a recessed part 36a recessed in the peripheral direction in a central area in the rotational axis direction of the cage. <P>COPYRIGHT: (C)2013,JPO&INPIT |
