| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve an abrasion resistance and a friction characteristic by avoiding generation of regions thin in oil film thickness at both ends with which a rolling member rollingly contacts, and by obtaining a sufficient oil film thickness in a contact part as a whole with which the rolling member rollingly contacts. <P>SOLUTION: The oil film thickness after elastic deformation is increased by a depth of a groove 5 in a rolling direction by forming the groove 5 in the rolling direction at the end of at least one contact region with which the rolling member rollingly contacts, so that the contact parts are separated from each other by lubricating oil. <P>COPYRIGHT: (C)2009,JPO&INPIT |
