| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hub unit bearing for a driving wheel capable of properly suppressing abnormal sound generated in an abutting surface between a bearing and a driving shaft member. <P>SOLUTION: In this hub unit bearing 1, a hub 2 inserted and fixed with a constant velocity joint 20 is provided, and a female spline 2a formed on an inner peripheral surface of the hub 2 and a male spline 22a formed in the constant velocity joint 20 are constituted to be fitted to each other. A lubricating film having a lubricating effect by shot-peening using a nonferrous shot material is formed in at least one of the female spline 2a and the male spline 22a. <P>COPYRIGHT: (C)2008,JPO&INPIT |
