Rolling bearing for use under high temperature conditions

Abstract

In a rolling bearing including an inner race, an outer race and a plurality of rolling elements in which at least one member of the inner race, the outer race and the rolling elements is made of a high carbon steel material and has a Rockwell hardness of H.sub.R C 60 or more, the high carbon steel material including, in a surface thereof, solid solution of carbon C and solid solution of nitrogen N which are adjusted to satisfy relationships of 0.8 wt %.ltoreq.C.ltoreq.1.2 wt % and 0.1 wt %.ltoreq.N.ltoreq.0.5 wt % with the balance Fe, and in which the retained austenite existing in the high carbon steel material is adjusted to substantially 0 wt %, the rolling beating exhibits superior dimensional stability and high endurance even when it is used under high-temperature conditions, and exhibits high productivity with low cost.

Dependencies are inferred from the claim text.