| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rolling bearing cage for improving the reliability of lubricating grease in a high speed application. <P>SOLUTION: The rolling bearing cage 5 comprises pockets 6 provided at a plurality of circumferential positions on the ring cage for holding rolling elements 4. An inner diameter d1 at either end in the cross direction of the cage is smaller than an inner diameter d2 at the center in the cross direction. For example, the inner peripheral face of the cage 5 consists of a center inner peripheral face portion 5a shaped into a cylindrical face and both-side end inner peripheral face portions 5b, 5b located adjacent to the center inner peripheral face portion 5a at a level difference. The inner diameter of the end inner peripheral face portion 5b is smaller than the inner diameter of the center inner peripheral face portion 5a. The center inner peripheral face portion 5a is wider than the pocket 6. <P>COPYRIGHT: (C)2007,JPO&INPIT |
