Rolling bearing

Details Rolling bearing Rolling bearing

F - Mech Eng,Light,Heat,Weapons

16

C

F16C 33/44 (2006.01) C22C 38/02 (2006.01) C22C 38/04 (2006.01) C22C 38/44 (2006.01) C22C 38/46 (2006.01) C23C 8/26 (2006.01) F16C 33/56 (2006.01) F16C 33/62 (2006.01) F16C 33/66 (2006.01)

Patent

CA 2660266

An outer ring and an inner ring of a rolling bearing are constituted of steel containing 0.77 to 0.85 % of carbon, 0 01 to 0 25 % of silicon, 0.01 to 0.35 % of manganese, 0.01 to 0.15 % of nickel, 3 75 to 4.25 % of chromium, 4 to 4.5 % of molybdenum and 0.9 to 1.1 % of vanadium with the rest consisting of iron and impurities, a nitrogen-enriched layer having a nitrogen concentration of at least 0.05 mass % is formed on a region including a rolling surface, and the total of a carbon concentration and the nitrogen concentration in the nitrogen-enriched layer is at least 0.82 mass % and not more than 1.9 mass %. A DLC coating layer is arranged on a region including an outer ring contact surface.

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