| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear motion rolling guide unit for supplying lubricating oil to rolling elements over a long period to improve durability by using the sintered resin member of polymeric sintered porous body to form a return passage hole in a slider. SOLUTION: In the slider 2 which is slidable via the plurality of rolling elements such as balls 20 relative to a raceway rail 1, the return passage hole 22 is formed to endlessly circulate the balls 20, where the sintered resin member 30 of the polymeric sintered porous body is fitted through a through-hole 26 and the balls 20 pass inside the sintered resin member 30. Lubricating oil or grease is absorbed into the porous structure of the sintered resin member 30, and the lubricating oil or the grease is continuously supplied to the passing balls 20 over a long period to lubricate a raceway 21 via the balls 20. This improves durability and reduces the sliding resistance of the slider. COPYRIGHT: (C)2009,JPO&INPIT
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