| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball spline which can improve lubricity without adding a new member. <P>SOLUTION: A lubricant reservoir 21 opened to the radially outer side is disposed on a part between return passages 19 adjacent to each other of a retainer 15. The return passage 19 and the lubricant reservoir 21 are communicated to each other by means of a plurality of grooves 22 disposed at a desirable interval in the longitudinal direction. The return passage 19 and a main passage 18 are communicated to each other by means of a plurality of grooves 24 disposed at a desirable interval in the longitudinal direction on a wall 23 which separates the return passage 19 and the main passage 18 from each other. <P>COPYRIGHT: (C)2012,JPO&INPIT |
