Patent ID: 9689423
Date: 2017-06-27
CPC Classifications: F16C

Claim:
1. A rolling bearing comprising: an inner ring; an outer ring; a plurality of rolling elements interposed between the inner ring and the outer ring; and an annular cage that holds the rolling elements, wherein the cage has a small-diameter annular portion provided between the inner ring and the outer ring on a first side of the bearing in an axial direction, a large-diameter annular portion provided between the inner ring and the outer ring on a second side of the bearing in the axial direction, and a plurality of cage bars extending from the annular portion toward a second side of the bearing in the axial direction, in one or both of an inner peripheral surface and an outer peripheral surface of the small-diameter annular portion, a recessed portion is formed which is open toward a bearing exterior on the first side of the bearing in the axial direction, and no recessed portion open toward the bearing exterior is formed in an inner peripheral surface or an outer peripheral surface of the large-diameter annular portion, and an inner wall of the recessed portion has an inclined surface that serves to enlarge a cross section of the recessed portion toward the bearing exterior on the first side of the bearing in the axial direction.