| 摘要 |
PROBLEM TO BE SOLVED: To provide an air oil bearing structure capable of preventing remaining of oil in a bearing when stopped, and preventing quick temperature rise at the bearing due to quick startup after stoppage for a long time. SOLUTION: In this air oil lubricating structure, a nozzle member 10 to supply air oil to a rolling bearing 1 is provided. From an air oil supply passage 13 communicated with a delivery hole for air oil 8 in the nozzle member 10, an oil discharge passage 19 is branched at a part close to the rolling bearing 1 to be opened outside the rolling bearing 1. At the part where the oil discharge passage 19 is branched from the air oil supply passage 13, a passage change-over means 27 is provided to change the flow direction of air oil toward the delivery hole 8 and toward the oil discharge passage 19. COPYRIGHT: (C)2004,JPO&NCIPI
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