A resin rotating body 1 is configured by a ring-shaped resin ring 2, and a metallic bush 3 which is fitted to an inner circumferential surface 2a of the resin ring, and projections 3a as rotation preventing means that connects the resin ring and the metallic bush so that the resin ring and the metallic bush do not rotate with respect to each other are provided on an outer circumferential surface of the metallic bush. Projections of the metallic bush are further provided at positions eccentric forward in a press-fitting direction of the metallic bush from a center in the axial direction of the metallic bush.