Patent ID: 9353795
Filing Date: 2016-05-31
CPC Classification: F16C

Claim Text:
1. A rolling bearing comprising: an inner race and an outer race rotatable relative to each other; a plurality of rolling elements interposed between the inner race and the outer race; a retainer arranged between the inner race and the outer race, for retaining the plurality of rolling elements equiangularly; a flange portion formed on at least one of a radially inner side and a radially outer side of an axial end portion of the retainer so as to extend radially; and a recessed groove formed in a region of the inner race corresponding to the flange portion or a region of the outer race corresponding to the flange portion so as to form a labyrinth together with the flange portion, wherein at least one of an inner side surface of the flange portion and an axial end surface of the recessed groove, which is opposed to the inner side surface of the flange portion, is inclined radially so as to generate a flow of lubricant, and wherein through the labyrinth formed by the flange portion and the recessed groove, the lubricant flowing from an outside of the rolling bearing into an inside of the rolling bearing and flowing out of the inside of the rolling bearing to the outside of the rolling bearing flows in such a direction that the lubricant flows into the rolling bearing from the radially inner side of the retainer and flows out of the rolling bearing to the radially outer side of the retainer.