Rolling/sliding part
AssigneeNsk Ltd.
InventorsShoji Noguchi, Satoru Aihara
Life of this patent
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Abstract
A part with excellent wear resistance when subjected to both sliding friction and rolling friction has a layer in the range from 0 to 50 microns beneath the surface with a maximum compressive residual stress of at least 90 kgf/mm.sup.2, and a hardness of at least Hv 780. The average radius of curvature of tips of minute protrusions existing on the surface is made at least 90 microns.
Claims1
A rolling/sliding part for use in rolling or sliding contact with another part, having minute protrusions with tips for defining a surface and a surface layer in the range from 0 to 50 microns beneath the surface, the surface layer having a maximum compressive residual stress of at least 90 kgf/mm.sup.2 and a hardness of at least Hv 780, and the tips of minute protrusions having an average radius of curvature of at least 90 microns.
Dependencies are inferred from the claim text.