Power-Transmitting Mechanism with Rolling-Element Bearing

A power-transmitting mechanism with rolling-element bearing, comprising an inner ring directly or indirectly supported by a rotational shaft so as to be incapable of relative rotation, an outer ring surrounding the inner ring such that there is a gap between the outer ring and the inner ring, a plurality of rolling elements held by the inner ring and the outer ring therebetween, a retainer that retains the plurality of rolling elements at predetermined intervals in a circumferential direction and rotates around the same axis as the rotational shaft in conjunction with orbital rotation of the plurality of rolling elements, and a preloading means exerting a pressing force in an axial direction on one of the inner ring and the outer ring to exert a preload between the inner ring and the outer ring, wherein

• the inner ring has a plurality of inner ring members disposed in series in the axial direction;
• the outer ring has a plurality of outer ring members respectively cooperating with the plurality of inner ring members;
• the plurality of rolling elements are disposed between the cooperating inner ring members and outer ring members;
• and
• the retainer has:
• a plurality of partitions retaining the plurality of rolling elements at predetermined intervals in the circumferential direction such that rolling elements disposed between one pair of cooperating inner ring and outer ring members and rolling elements disposed between another pair of cooperating inner ring and outer ring members orbit the corresponding inner ring members in a synchronized manner, and
• a connector connecting the plurality of partitions such that the plurality of partitions integrally rotate around an axis.