Importance

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Abstract

The present invention provides a rolling bearing that reduces the weight of a holder, that meanwhile maintains the rigidity of the holder itself, and that makes it possible to minimize increases in rotational torque even when rotating at an extremely high speed. The rolling bearing comprises an inner ring, an outer ring, a plurality of rolling bodies, and a holder for holding the rolling bodies between the inner ring and the outer ring. The holder of the present invention comprises: an annular base section; a plurality of seat sections that extend in the axial direction from the base direction and that are arranged along the circumferential direction of the base section; two claw sections that are provided to both sides of the seat sections in the circumferential direction thereof so as to extend further in the axial direction from each of the seat sections; and a plurality of pocket sections that are for holding the plurality of rolling bodies, each of said pocket sections comprising an inner surface that is formed between adjacent seat sections and between the facing claw sections of the adjacent seat sections. The rolling bearing is characterized in that: the seat sections comprise an inner diameter surface that has a larger inner diameter than the inner diameter surface of the base section; and the pitch diameter of the rolling bodies is larger than the inner diameter of the inner diameter surfaces of the seat sections.

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First Claim