ROLLING BEARING

摘要

A rolling bearing characterized in that at least the fixed side bearing ring thereof has a lower bainite structure formed by isothermal transformation treatment, a hardness of a HRC of 54 to 64, an amount of retained austenite of 5 % or less, and an area percentage of carbide particles having a length of 0.8 mu m or more relative to the total secondary eutectoid carbide area of 20 % or less. The rolling bearing is reduced in the occurrence of white layers.