Rolling element and a process for producing the rolling element

Details Rolling element and a process for producing the rolling element Rolling element and a process for producing the rolling element

2005-05-26

2008-12-09

Fenstermacher, David M (Department: 3682)

Friction gear transmission systems or components

Friction transmission or element

Particular friction surface

C476S073000, C476S042000, C384S492000, C384S625000

Reexamination Certificate

active

07462128

ABSTRACT:
A rolling element including a base metal, and a nickel coat formed on a surface of the base metal and cooperating with the base metal to constitute a rolling contact surface satisfying condition that a mean value of ratios of L1to L2as measured in at least three optional observation areas is in a range of from 1.2 to 2.4, where each observation area is disposed in a cross section taken in a vertical direction relative to the surface of the base metal and is defined by two parallel vertical lines; lengths L1and L2respectively represent a length of an interface between the base metal and the nickel coat, and a length of a reference line segment extending perpendicular to the vertical direction, in same observation area.

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Japanese Industrial Standard, “Surface Roughness—Definitions and Designation”, JIS B 0601, 1994, pp. 1-25.
Japanese Industrial Standard, “Surface Texture—Instruments for the Assessment of Surface Texture—Profile Method”, JIS B 0651, 1996, pp. 1-19.

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