Patent ID: 8956050
Filing Date: 2015-02-17
Classification: F16C

Abstract:
1. A rolling bearing assembly comprising: a rolling bearing including rolling elements interposed between rolling surfaces of an inner ring and an outer ring; and a housing having an inner diameter surface on which the outer ring of the rolling bearing is mounted; wherein two oil supply holes for lubricant oil supply are provided in the outer ring so as to communicate between an outer diameter surface of the outer ring and a position, near the rolling surface, in an inner peripheral surface of the outer ring; wherein a circumferential flow passage is provided on a mounting surface between the outer diameter surface of the outer ring and the inner diameter surface of the housing on which the outer ring is mounted, the circumferential flow passage communicating with the two oil supply holes and extending in a circumferential direction; wherein a lubricant oil introduction hole is provided in the housing so as to communicate with the circumferential flow passage at a circumferential position different from that of the two oil supply holes to supply a lubricant oil to the circumferential flow passage; wherein the number of the rolling elements provided in the rolling bearing is an even number; and wherein the two oil supply holes are provided in the outer ring such that when a circumferential position of any one of the rolling elements coincides with that of one of the oil supply holes, the other oil supply hole is located at an outer ring circumferential position between a first rolling element near a 180-degree diagonal position relative to the one of the oil supply holes and a second rolling element adjacent to the first rolling element.