Carburized bearing steel parts and rods for carburized bearing steel parts

摘要

The total mass of CaO, Al ₂ O ₃ and SiO ₂ containing CaO, Al ₂ O ₃ and SiO ₂ and also containing CaO, Al ₂ O ₃ and SiO ₂ with a predetermined chemical composition and a circle equivalent diameter of 5 μm or more in an arbitrary cross section of a part Carburized bearing, wherein the number density of oxides with a content of Al ₂ O ₃ of 50% by mass or more is 3.0/cm2 or less, Vickers hardness at a depth of 50 μm from the raceway is 750 or more, and the compressive residual stress of the raceway is 900 MPa or more Steel parts and bars for carburized bearing steel parts suitable for obtaining the carburized bearing steel parts.