Patent ID: 9689430
Date: 2017-06-27
CPC Classifications: F16C,F16H

Claim:
1. A gear transmission having a carrier supported on a case via a bearing, wherein the bearing comprises: an inner race having a tapered outer peripheral surface, and being attached to one of the case and the carrier; an outer race having a tapered inner peripheral surface, and being attached to the other of the case and the carrier, the tapered inner peripheral surface facing the outer peripheral surface of the inner race; a plurality of cylindrical rollers disposed between the inner race and the outer race; and a ring-shaped retainer disposed between the inner race and the outer race, and maintaining spacing between adjacent rollers, wherein a first member is fixed to the case between the case and the retainer, a second member is fixed to the carrier between the carrier and the retainer, an end part of the retainer having a larger diameter makes contact with the case via the first member, and makes contact with the carrier via the second member, friction that occurs between the first member and the retainer is smaller than friction that occurs when the retainer makes contact with the case without using the first member, and friction that occurs between the second member and the retainer is smaller than friction that occurs when the retainer makes contact with the carrier without using the second member.