To provide a rolling bearing having a least dust generating amount and a low outgassing capability under a clean environment and vacuum environment and achieving a superior durability under high surface pressure.
Surface treatment layers 16 are formed in raceway surfaces of an inner ring 11 and outer ring 12 in an angular ball bearing and a rolling surface of an rolling element 13. A plurality of minute recesses are formed in the surface of the layer. The surface treatment layers 16 and the recess are formed by a treatment for blasting a polishing agent having a hardness equal to or more than each surface has and increasing temperature in proximity to the surface of each surface to not less than an A3 transformation point of an iron-based metal composing a bearing part. In addition, the surface treatment layers 16 is covered with a lubricating film 15 containing fluorine polymer having a functional group and fluorine oil.
Yoshiaki Naito
Cui Shu Tetsu