Patent ID: 9416822
Filing Date: 2016-08-16
CPC Classification: F16C,Y10T

Claim Text:
1. A rolling bearing component comprising: a nitrided surface zone having a nitrogen content decreasing from the outside to the inside; a core zone; an absolute value of residual compressive stresses in the surface zone decreasing from the outside to the inside; a hardness of 870 HV 0.3 to 1,000 HV 0.3 at a depth of 0.04 mm, the hardness at a depth of 0.3 mm being at most 250 HV 0.3 less than at a depth of 0.04 mm; wherein the hardness at a depth of 0.3 mm, indicated in HV 0.3, is more than 75% of the hardness at a depth of 0.04 mm; wherein the absolute value of the residual compressive stress on the surface is at least 500 MPa and at most 1,000 MPa; wherein the absolute value of the residual compressive stress at a depth of 0.05 mm is less than 60% of the absolute value of the residual compressive stress on the surface.