Patent ID: 6051082
Filing Date: 2000-04-18
Classification: C21D,F16C,Y10S

Abstract:
A rolling bearing comprising:rolling element formed of a steel containing 0.9 to 1.1 wt. % C, 0.1 to 0.5 wt. % Si, 0.2 to 0.8 wt. % Mn, 1.0 to 1.8 wt. % Cr, with the balance being Fe and inevitable impurities,wherein at least the surface of the rolling element includes carbides having an area fraction of 5% to 15%;of these carbides, carbides having an averaged particle diameter of 0.5 .mu.m or less share 50% or more of the area fraction of all the carbides;of the carbides, carbides having an averaged particle diameter of 1.mu.m or more share 2% or less of the area fraction of all the carbides; andwherein the rolling element has a Vickers surface hardness HV of 750 to 900.