| 摘要 |
PROBLEM TO BE SOLVED: To improve a lubricating state inside of a rolling element installation space 6a by allowing a lubricant to easily flow inside of the rolling element installation space 6a. SOLUTION: Inner edges of pockets 5b, 5b are formed in a state of being shifted to a radial outer side with respect to the other pockets 5a, 5b in the radial direction of a retainer 3a. Thus large clearances 7, 7 where the lubricant can easily flow, are formed among inner half portions of a pair of rollers 2, 2 retained in the pair of other pockets 5a, 5a existing at both sides of the pockets 5b, 5b in the circumferential direction. As a result, the lubricant can easily flow inside of the rolling element installation space 6a through a radial inner end opening portion of the rolling element installation space 6a. Thus the lubricating state inside of the rolling element installation space 6a can be improved. COPYRIGHT: (C)2006,JPO&NCIPI
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