| abstract |
(57) Abstract: To provide a bearing material having a rolling fatigue life longer than ever. SOLUTION: C: 0.95 to 1.10 mass%, Si: 0.15 to 0.70 ma ss%, Mn: 1.15 mass% or less, Cr: 0.90 to 1.60 mass%, P: 0.025 mass% or less, and S and O which are non-metal inclusion forming elements S: 0.025 mass% or less, O: 0.0012 ma ss% or less, Mo: 0.10 to 0.25 mass% and / if necessary Or Sb: 0.0010 mass% or less is contained in the composition, and if necessary, the maximum diameter of oxide-based non-metallic inclusions is controlled to 10 μm or less, and AlN in the material is 0.020 mass. % Or less and / or a bearing material containing 1200 or less sulfide-based non-metallic inclusions having a thickness of 1 μm or more in the material when the test area is 320 mm 2 . |