| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a roller bearing in which lubrication oil flows through in the axial direction, which is excellent in lubrication and suppresses torque increase caused by the agitation resistance of the lubrication oil.SOLUTION: A roller bearing includes an inner race 10, an outer race 20, a plurality of rolling elements 40, and a cage 30 holding the rolling elements 40 separated from each other in a predetermined interval in the circumferential direction. In the roller bearing, lubrication oil flows through in the axial direction. In an outer periphery of the inner race 10 in a lubrication oil inlet, an elastic ring 52 the diameter of which expands by centrifugal force is detachably provided. A gap between the cage 30 and the elastic ring 52 in the radial direction is varied in accordance with the revolution speed of the inner race.</p> |
