Patent ID: 6817768
Filing Date: 2004-11-16
Classification: F16C

Abstract:
A roller bearing comprising:an inner ring member; an outer ring member which is concentric with radially outside of the inner ring member; and a plurality of rollers interposed between the inner ring member and the outer ring member, wherein a flange having a guide surface for guiding an end surface of the roller in a sliding contact is provided at one of the inner ring member and outer ring member at least, and three-dimensional surface roughness of at least one of the end surface of the roller and the guide surface of the flange is defined to a value which satisfies conditional expressions of Sa&lE;0.1 &mgr;m and 0.15 &mgr;m&lE;Svk&lE;0.30 m, where Sa is arithmetical average roughness based on roughness curve and Svk is reduced valley depth based on the Abbott-firestone curve (bearing curve).