Patent ID: 6568856
Filing Date: 2003-05-27
Classification: C10M,C10N,F16C

Abstract:
A rolling bearing comprising an outer ring having on its inner periphery an outer raceway, an inner ring having on its outer periphery an inner raceway, plural rolling elements arranged between said outer raceway and said inner raceway in a freely rotatable manner, a cage holding said plural rotating elements in a freely rotatable condition, and a grease packed in the space between said outer raceway and said inner raceway, said grease comprising a base oil composed of a lubricant having a polar group in its molecular structure and a non-polar lubricant, and a metallic soap-based thickener containing a long-fiber material whose major axis part length is at least 3 &mgr;m, and the radius of curvature of the cross-sectional shape of said inner raceway and the radius of curvature of the cross-sectional shape of said outer raceway being in the range of from 51.0% to smaller than 60.0% of the diameter of said rolling element.