| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure a flow of lubricant passing in a radial direction of a comb-like cage on a roller end face side where there is a circular ring part of the comb-like cage, and to lessen stress concentration on fillet parts of pockets. <P>SOLUTION: A side face of the circular ring part 4a at every other pockets 5 in a circumferential direction of the comb-like cage 4 is formed to be retreated from an end face of an opposed roller 3, compared with a side face of the circular ring part 4a at the other pockets 5, so that wide clearances δ are formed between the end face of the roller 3 and the side face at the every other pockets 5 in which the side face of the circular ring part 4a is retreated and thereby the flow of the lubricant passing in the radial direction of the comb-like cage 4 is ensured. A curvature radius R of root fillet parts of a columnar part 4b of each pocket 5 in which the side face of the circular ring part 4a is retreated is larger than a chamfer dimension C of the end face of the opposed roller 3, so that the stress concentration on the fillet parts is lessened. <P>COPYRIGHT: (C)2007,JPO&INPIT |
