Patent ID: 9127716
Filing Date: 2015-09-08
Classification: F16C

Abstract:
1. A ball bearing comprising: an outer raceway member having an inner periphery raceway groove; an inner raceway member having an outer periphery raceway groove; a plurality of balls disposed between the inner periphery raceway groove of the outer raceway member and the outer periphery raceway groove of the inner raceway member; and a cage that holds the balls such that the balls are arranged at intervals in a circumferential direction of the ball bearing, that is located so as to be apart from the inner raceway member, and that is allowed to be in contact with the outer raceway member, a portion of the outer raceway member, with which the cage is brought into contact, being only the inner periphery raceway groove, wherein each of cage bars of the cage is guided by the inner periphery raceway groove of the outer raceway member at two points, in a section taken along an axial direction of the ball bearing and passing through the cage bar.