ROLLING COMPONENT, ROLLING BEARING, ROLLING BEARING FOR AUTOMOBILE ELECTRICAL AUXILIARY EQUIPMENT, AND ROLLING BEARING FOR SPEED INCREASING/DECREASING MACHINE

摘要

A rolling component (10) pertaining to one embodiment of the present invention is a steel rolling component provided on a surface (10a, 10b, 10c, 10d) with a quench hardened layer (11). The hydrogen diffusion coefficient in the quench hardened layer (11) is less than 2.6×10^-11m²/s. According to the rolling component pertaining to the embodiment, the occurrence of hydrogen embrittlement associated with penetration of hydrogen from the surface can be suppressed.