PURPOSE: To produce a rolling bearing member excellent in shape precision and excellent in fatigue strength without detaching a bearing ring from a base metal at the time of heat treatment, at the time of producing a rolling bearing member composed of a base metal made of a low alloy steel and a bearing ring made of a bearing steel, by subjecting a material having a specified compsn. to heat treatment under specified conditions.

CONSTITUTION: At the time of producing a rolling bearing member, an outer ring 1 and an inner ring 2 are composed of a bearing ring 5 made of a rolling bearing steel subjected to through quenching and a base metal 6 made of a low alloy steel contg. 0.25 to 0.32% C, 0.30 to 16.5% Mn, ≤0.40% Si and ≤0.035% S, which is heated to an austentizing temp. of about 850°C, is thereafter cooled by oil, molten salt, water or the like and is quenched to transform its structure into martensitic one and to regulate its hardness to about 30 by a Rockwell hardness C scale. Next, it is heated at 160 to 220°C, is held for 1 to 4 hr and is tempered, by which the rolling bearing member free from the detachment of the bearing ring 5 from the base metal 6 in the process of this treatment and excellent in dimensional precision and fatigue strength can be produced.