| 摘要 |
PROBLEM TO BE SOLVED: To efficiently cool an inner ring by a cooling oil without forming a circumferential groove in the end face of the inner ring and allow a part of the cooling oil to flow into a bearing as a lubricating oil. SOLUTION: A cooling oil introduction member 11 having a nozzle 12 jetting a cooling oil is disposed at one end of the angular ball bearing 1. A seal part 13 facing the outer diameter tapered surface 2b of the inner ring 2 at one end through a clearance is formed by the extension part 11a of the cooling oil introduction member 11 and the cooling oil is jetted from the nozzle 12 to a small diameter step part 2c formed at the end of the inner ring 2. Consequently, the inner ring 2 can be efficiently cooled by the cooling oil without forming the circumferential groove in the end face of the inner ring 2, and the part of the cooling oil is allowed to flow into the bearing as the lubricating oil. COPYRIGHT: (C)2007,JPO&INPIT
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