PROBLEM TO BE SOLVED: To improve surface strength (hardness and residual compressive stress) in a rolling part or a sliding part, to prevent shortage of oil film, and to improve durability with a simple method. SOLUTION: First, outer shape machining is performed by roughing such as lathe turning with respect to a component material of a bearing 13 and a roller shaft 14 made of high carbon chromium bearing steel (outer shape machining process; step S1). Next, carburizing-quenching-tempering and/or high frequency induction hardening is carried out (heat treatment process; step S2). After that, finishing such as polishing is performed (finishing process; step S3), and fine particle peening is performed with respect to the component material after finishing (surface treatment process; step S4). By performing the processes, recessions and projections having surface hardness of 800 HV or more, residual compressive stress in 30 μm from the surface of equal to or not more than -800 MPa, and surface roughness of about Ra 0.4 μm are formed on a surface of the component material. COPYRIGHT: (C)2011,JPO&INPIT