| 摘要 |
<P>PROBLEM TO BE SOLVED: To lengthen the service life of a ball bearing by moving grease deposited on an inner peripheral surface of a cage, to the outer peripheral side by penetrating through the cage. <P>SOLUTION: The ring-shaped cage 4 is arranged between an outer race 1 and an inner race 2 of a grease lubrication type ball bearing, with a pocket 5 for storing a rolling element 3. In the cage, at least one through-hole 11 penetrating in the radial direction is formed between mutual ones of the adjacent pockets 5 in the peripheral direction of the cage 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
