Patent ID: 6893372
Filing Date: 2005-05-17
Classification: F16C,F16H,Y10T

Abstract:
1. A roller bearing comprising: an outer ring; an inner ring coaxially arranged with the outer ring; and a plurality of rollers interposed between the outer ring and the inner ring; wherein a collar portion having a guide surface guiding one end face of the roller in accordance with a slip contact is provided in at least one axial end portion of the outer ring and the inner ring, and surface roughness in at least one of the end face of the roller and the guide surface of the collar portion is defined as a value satisfying the following conditional expressions (1), (2) and (3): where, Ra (r) is an arithmetic average of roughness in a radial direction on the end face of the roller, and Ra (c) is an arithmetic average of roughness in a peripheral direction on the end face of the roller.