| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a structure to sufficiently import a lubrication oil into respective pockets 9, 9 even if a clearance between a rolling contact surface of respective spherical surface rollers and an inner surface of pockets 9, 9 of a retainer 4b is made smaller in order to prevent the respective spherical surface rollers from being skewed. <P>SOLUTION: Circumferential direction both sides surfaces of each of column parts 8a, 8a are concave curve surface parts 11, 11 which are proximately facing to a rolling contact surface of each roller and a radial directional position of the retainer 4b is controlled by a roller guide. Further, concave grooves 13, 13 for mobilizing the lubrication oil in the circumferential direction side surface of each of columns 8a, 8a are formed in the rotational direction of each spherical surface roller held inside each of pockets 9, 9. <P>COPYRIGHT: (C)2007,JPO&INPIT |
