Patent ID: 8016490

Claim:
A thin-wall bearing comprising: an inner ring; an outer ring; a plurality of rolling elements disposed rollingly between the inner ring and the outer ring; and a cage comprising: pockets for rollingly retaining the rolling elements; at least one plate-like member made of a resin disposed circularly along the inner ring and the outer ring; and a chamfered portion arranged at a circumferential end of each of said at least one plate-like member, wherein a formula of (D−d)/d≦0.187 is satisfied where D is an outer diameter of the thin-wall bearing and d is a an inner diameter of the thin-wall bearing, wherein each of said at least one plate-like member is disposed with both plate surfaces being directed to the inner ring and the outer ring, respectively, and the chamfered portion is formed such that thickness of each of said at least one plate-like member is gradually reduced toward the circumferential end, and wherein a corner formed between a circumferential end face and the chamfered portion is neither in contact with the inner ring nor the outer ring during rotation of the thin-wall bearing.