| 摘要 |
A linear motion guide unit is disclosed in which a slider(2, 82, 92) moves relatively of and along a track rail(1, 91, 92) by virtue of rolling elements(20, 90). The rolling elements are allowed to recirculate from a load raceway(21, 96) to a non-loaded area composed of a turnaround and a return passage(22, 62, 72, 101) formed in the slider. The return passage is encircled with a sintered resinous member(30, 31, 33, 40, 50, 60, 70, 102) of porous texture. Lubricant absorbed and held in voids in the sintered resinous member can be supplied over a prolonged period to the rolling elements, thereby lubricating the rolling elements to make the frictional resistance less, which might be encountered when the slider moves on the track rail, and ultimately helping ensure the improvement in durability. <IMAGE> |
