| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rolling element screw device in which the stroke distance of a nut member is not reduced even if a sufficient amount of lubricant is attached to the nut member, the heat release of the nut member is not spoiled, and a lubricant tank can be easily replaced. <P>SOLUTION: The rolling element screw device includes a great number of rolling elements, a screw shaft having an outer periphery in which a rolling groove for the rolling elements is helically formed, the nut member which has a through-hole to which the screw shaft is inserted, and which is screw-engaged with the screw shaft via the rolling elements, lubricant supply holes formed so as to penetrate the nut member from the outer peripheral surface to the inner peripheral surface thereof, a lubricant tank which is attached to the outer peripheral surface of the nut member, and which has a storage chamber for the lubricant, and a lubricant applying element which stands from the lubricant tank, and which is inserted to the lubricant supplying hole in association with an attaching operation of the lubricant tank to the nut member so as to apply the lubricant as the distal end part thereof makes contact with the rolling groove of the screw shaft. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
