Patent ID: 9488225
Filing Date: 2016-11-08
CPC Classification: F16C

Claim Text:
1. A rolling bearing apparatus comprising: a bearing portion having an inner ring, an outer ring, a plurality of rolling elements interposed between the inner ring and the outer ring, and a cage that holds the rolling elements such that the rolling elements are arranged in a circumferential direction; and a lubrication unit having a tank in which a lubricant to be supplied to an annular space formed between the inner ring and the outer ring is stored and which enables the lubricant to flow out through a lower part of the tank, the lubrication unit being provided adjacently to the annular space, wherein the lubricant is electrically conductive, the lubrication unit further includes a first electrode provided in the lower part in the tank, a second electrode provided at a position higher than a position of the first electrode in the tank, and a wiring section electrically connected to the first electrode and the second electrode so as to allow electric continuity between the first electrode and the second electrode to be detected, and a lubricant repellant portion is provided in an area other than areas of the first electrode and the second electrode in the tank.