| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricant degradation detector simply and compactly mountable on a bearing for stably and accurately detecting the state of a degraded lubricant within the bearing, and a bearing with a detector equipped with the degradation detector. SOLUTION: In this lubricant degradation detector, a light emitting element and a light receiving element are oppositely provided on both ends, respectively, of a circular arc-shaped optical fiber 4, and a gap part 7 for measurement is provided in a part of the optical fiber 4 for causing a lubricant to exist therein. This gap part 7 is provided at an inclination angleθwith respect to a direction vertical to an optical path made up of the optical fiber 4. COPYRIGHT: (C)2009,JPO&INPIT
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