Patent ID: 6491768
Filing Date: 2002-12-10
Classification: C21D,C22C,F16C,Y10S

Abstract:
A method for fabricating an anti-friction bearing for electric devices used in office automation equipment, comprising the steps of:forming at least an outer ring and an inner ring of the anti-friction bearing using bearing material including C: 0.90-1.30 wt %, Si: 0.40-0.90 wt %, Mn: 0.90-1.60 wt %, and Cr: 0.90-1.70 wt %; and tempering the bearing at a temperature in the range of 170Â° C. and 250Â° C., such that the amount of retained austenite in a surface layer thereof is less than 6 percent by volume and a hardness of said surface layer is HRC 60 or more after said tempering.