| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing device for enabling lubricating oil supplied from a nozzle opened in an annular space between an inner race and an outer race of a rolling bearing to further surely contribute to the lubrication of the rolling bearing more than a conventional rolling bearing device. SOLUTION: A groove 14b extending over one round in the peripheral direction with the rotational center of a cage 14 as a center and having its bottom communicating with respective pockets 14a is formed on one end surface side of the cage 14 having a plurality of pockets 14a for holding a rolling body 13. The turbulence of an air flow and the generation of negative pressure are restrained in the vicinity of an opening of the nozzle 43 when rotating the rolling bearing 1 by putting the tip of the nozzle 43 of an oil feeding unit 4 in an inserted state into its groove 14b, and the lubricating oil supplied from the nozzle 43 is surely made to reach the rolling body 13. COPYRIGHT: (C)2006,JPO&NCIPI
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