| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing device with a sensor capable of calculating a load working on rolling elements even if a reflected wave cannot be received accurately. SOLUTION: The rolling bearing device with the sensor is provided with a rolling bearing 1 having a ball 15 for rolling while contacting with respective raceways 11u, 14u of an outer ring 11 and an inner ring 12 and the supersonic wave sensor 2 for dispatching a supersonic wave to a contact part of the raceway 11u of the outer ring 11 and the ball 15 and receiving the reflected wave of the supersonic wave at the contacting part and a rolling element load calculation part 3 for calculating the load working on the ball 15. The supersonic wave sensor 2 dispatches the supersonic wave from a plurality of angles to the contacting part to detect a contact angle α of the raceway 11u of the outer ring 11 and the ball 15 and receives the reflected wave and the rolling element load calculation part 3 detects the contact angle α based on the reflected wave and calculates the load working on the ball 15 by using the contact angle α. COPYRIGHT: (C)2009,JPO&INPIT
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