Patent ID: 8864387
Filing Date: 2014-10-21
Classification: F16C

Abstract:
1. A resin-formed retainer for a roller bearing in which a plurality of pockets for rotatably holding individual needle rollers are arranged at a fixed pitch in a circumferential direction; the retainer for the roller bearing comprising: a plurality of partitions for partitioning adjacent pockets, the partitions extending in a center axial direction of an arrangement of the plurality of pockets; and retaining protrusions integrally molded on each of the partitions; each of the partitions having side faces that face sides of adjacent partitions, and an outer-circumferential-side end face that faces an outer circumferential side of the arrangement of the plurality of pockets; the retaining protrusions being provided in corner parts where the side faces and the outer-circumferential-side end face of each of the partitions intersect; each of the retaining protrusions having an inner side inclined part that protrudes from the side face and protrudes progressively farther towards a side of the corner part, and an outer side inclined parts that protrude from the outer-circumferential-side end face and protrudes progressively farther towards the side of the corner part; and a tip of each of the retaining protrusions, which is a connected extension of the inner side inclined part and the outer side inclined part so as to cover the corner part, protruding more to the outer circumferential side by a predetermined amount from the outer-circumferential-side end face and extending to a position of protruding in the circumferential direction by a predetermined amount from the side face.