| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent a lubricant impregnated to a lubricant impregnating member provided in a circulation hole of a rolling body from leaking from a clearance between a casing and an end cap to the outside of the casing. <P>SOLUTION: The end cap 2 is provided on both end surfaces 1e of the casing 1. In the casing 1, the circulation hole 1b for circulating balls 5 which are in contact with a track groove 4 provided on a track rail L to smooth movement of the casing 1 is formed, and the lubricant impregnating member 6 impregnated with the lubricant is incorporated in the circulation hole 1b. In the end cap 2, a turnaround path 2b that continues to the circulation hole 1b is formed, the ball 5 that has passed through the circulation hole 1b is brought into contact with the lubricant impregnating member 6 and hence the lubricant is supplied, and the balls 5 having passed through the circulation hole 1b are circulated via the turnaround path 2b. A seal member 7 is interposed between the casing 1 and the end cap 2 to block the clearance where the lubricant leaks from between the circumference of a connection pipe section 2a inserted into the circulation hole 1b and the circulation hole 1b to the outside of the casing 1. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
