| 摘要 |
PROBLEM TO BE SOLVED: To provide an air oil lubricating structure of a rolling bearing, stably performs low-noise air oil lubrication without addition of separate parts or without parts of special width and shapes even in the case of a small-diameter bearing or a bearing having small size from the raceway surface to the width surface. SOLUTION: An outside diameter surface of an inner ring 2 of the rolling bearing 1 is provided with a slant part 2b connected to the raceway surface 2a of the inner ring 2, and with a nozzle member 6 laid along the slant part 2b with a clearance gapδ. A circumferential groove side wall surface 2c formed by a slant more steep than the slant part 2b is provided on the inner ring width surface side from the slant part 2b of the inner ring 2. The circumferential groove 7 is formed of a chamfered part 11a on the outside diameter side of an inner ring spacer 11 adjacent to the inner ring 2 and the circumferential groove side wall surface 2c. The nozzle member 6 is provided with an air oil delivery hole 8 opened opposite to the circumferential groove 7. COPYRIGHT: (C)2005,JPO&NCIPI
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