Processing method and bearing

Abstract

A processing method for a bearing is capable of shortening a lead time without the need for carrying out super finishing (mirror grinding). A component of a bearing is finished while chucking the component by a chucking device. Hardened steel cutting and grinding are carried out while chucking the component without releasing the chucking by the chucking device.

1 - 7 . (canceled) 
     
     
         8 . A bearing comprising an inner race, the inner race including:
 an outer surface; and   an inner surface, wherein   the inner race is heat treated,   the outer surface includes a hardened rolling surface,   the hardened rolling surface is hardened steel cut to have a machining allowance of 100 μm or less remaining as a finish grinding allowance and finish ground to remove a damaged layer generated by the hardened steel cutting of the hardened rolling surface,   the inner surface is hardened steel cut, and   the hardened steel cutting of the inner surface occurs simultaneously with the finish grinding of the hardened rolling surface.   
     
     
         9 . A bearing comprising an outer race, the outer race including:
 an outer surface; and   an inner surface, wherein   the outer race is heat treated,   the inner surface includes a hardened rolling surface,   the hardened rolling surface is hardened steel cut to have a machining allowance of 100 μm or less remaining as a finish grinding allowance and finish ground to remove a damaged layer generated by the hardened steel cutting of the hardened rolling surface,   the outer surface is hardened steel cut, and   the hardened steel cutting of the outer surface occurs simultaneously with the finish grinding of the hardened rolling surface.