Patent ID: 7390128
Filing Date: 2008-06-24
Classification: C23C,F16C,Y10S

Abstract:
1. A rolling bearing for a roll neck, comprising: an inner ring having an inner ring race at its outer peripheral surface; an outer ring having an outer ring race at its inner peripheral surface; and a taper roller disposed between said inner ring race and said outer ring race, and having a rolling surface that is brought in contact with the inner and outer ring races; wherein at least a first one of the inner ring race, the outer ring race, and the rolling surface, comprises a first portion with a formed film made of a manganese phosphate, and wherein at least a second one of the inner ring race, the outer ring race and the rolling surface comprises a second portion on which there is disposed no formed film but which has a surface roughness of 0.1 μm or less but greater than 0 μm in terms of Ra, and further wherein said second portion comes into contact with said first portion.