| 摘要 |
PROBLEM TO BE SOLVED: To provide structure for sufficiently suppressing an abrasion amount between outer circumferential faces of a plurality of cylindrical rollers 1 and flat faces 10, 11, preventing dropping out of each cylindrical roller 1 from the inside of each pocket 3 even if dimension error of the pocket 3 gets relatively larger, and holding each cylindrical roller 1 at the inside of each pocket 3 to be capable of rolling. SOLUTION: A contact angleαof each cylindrical roller 1 with respect to the cage 2 is within a range of 15 to 35 degrees. By adopting the structure, the above problem is solved. COPYRIGHT: (C)2006,JPO&NCIPI
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