| 摘要 |
A rolling bearing includes rolling elements (3) interposed between rolling surfaces (1a, 2a) of an inner ring (1) and an outer ring (2). An oil supply hole (2c) for lubricant oil supply is provided in the outer ring (2) so as to communicate between an outer diameter surface (2d) of the outer ring (2) and a position, near the rolling surface, in an inner peripheral surface (2g) of the outer ring (2d). A circumferential groove (2b) is provided on the outer diameter surface (2d) of the outer ring (2) so as to communicate with the oil supply hole (2c) to introduce, to the oil supply hole (2c), a lubricant oil supplied from a circumferential position outside the bearing that is different from that of the oil supply hole (2c).
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