The bearing part is a bearing part having a rolling fatigue life excellent even under a contaminated environment, chemical composition, in mass%, C: 0.95% ~1.10%, Si: 0 .10% ~0.70%, Mn: 0.20% ~1.20%, Cr: 0.90% ~1.60%, Al: 0.010% ~0.100%, N: 0.003 % contained to 0.030%, P: 0.025% or less, S: 0.025% or less, O: limit 0.0010% to, a predetermined amount of optionally Mo, B, Cu, Ni, containing Ca, the balance being Fe and impurities, the metal structure is a residual austenite, spherical cementite and martensite, the amount of retained austenite is 18% to 25% by volume%, average particle prior austenite diameter or less 6.0 .mu.m, the average particle diameter of the spherical cementite And at 0.45μm or less, the number density of the spherical cementite is 0.45 × 10 ⁶ cells / mm ² or more.