| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that, since a rotating shaft device used as a drive shaft of a tractor or the like rotates on an axis, lubricant is attracted to the inner peripheral wall surface of an outer shaft body due to a centrifugal force generated by the rotation of the rotating shaft device, and, since a grease feed nipple is simply attached to the wall surface of the outer shaft body when the rotating shaft device rotates, the lubricant sometimes leaks outside the grease feed nipple. SOLUTION: Since the end of a grease feed port 24 in the grease feed nipple 20 is located at a substantially central part of a space 21 so as to avoid the inner peripheral wall surface of the outer shaft body 11, even when the lubricant 14 supplied to the space 21 comes near to the inner peripheral surface corresponding to the space 21, the lubricant can be prevented from returning to a grease feed path 30 from the end of the grease feed port 24. The lubricating characteristics of a spline can be maintained for a long period. COPYRIGHT: (C)2004,JPO
|
