| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball screw device which improves a cooling effect as high as possible without excessively reducing working efficiency or increasing pressure loss. <P>SOLUTION: In the ball screw device equipped with a screw stem 10, a nut 20 screwed into the screw stem 10 through a plurality of rolling elements 30, and a cooling means 40 for cooling the nut 20, an insertion member 50 extending in length direction of a through hole 20b is arranged in the through hole 20b. <P>COPYRIGHT: (C)2012,JPO&INPIT |
