| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a bearing for an automobile auxiliary machine capable of simultaneously and inexpensively attaining grease leakage resistance and space-saving. <P>SOLUTION: A cage 4 has pockets 50 respectively holding a plurality of balls in a plurality of places in the circumferential direction. An inner surface of the respective pockets 50 is formed in a ring shape of a concave curved surface shape of becoming a small diameter as a part on the inner diameter side more than a ball arranging pitch circle PCD approaches the inner diameter side opening edge of the cage, and a recessed part 54 extending to the cage outer diameter side from the opening edge on the cage inner diameter side, is arranged on the inner surface of the respective pockets 50. A coating film composed of any of resin, soft metal and a solid lubricant, may be formed on a ball guiding surface in the pockets 50. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
