Bearings – Rotary bearing – Antifriction bearing
Patent
1993-07-30
1995-05-02
Hannon, Thomas R.
Bearings
Rotary bearing
Antifriction bearing
384565, F16C 3358
Patent
active
054113369
ABSTRACT:
A rolling bearing long in service life in which the rolling contact surfaces of the rolling elements and the mating member thereof are prevented from peeling damage. In a rolling bearing used in boundary lubrication state, the surface roughnesses of the rolling contact surfaces of each of the rolling elements and the mating member thereof are in a range of from 0.15 to 0.5 .mu.mRa when represented by central line average roughness, and the ratio thereof is 3 or smaller, whereby the surface roughnesses can be obtained in combination which are most suitable for decreasing the probabilities of the surface damage being caused in the surface layers of the rolling contact surfaces of the mating member and each rolling element. Hence, stresses are locally set up in the surface layers of the rolling contact surfaces which are smaller than the allowable shearing stress, so that the rolling contact surfaces are prevented from the peeling damage.
REFERENCES:
patent: 5064298 (1991-11-01), Hibi et al.
patent: 5145267 (1992-09-01), Takata et al.
Murakami Yasuo
Takemura Hiromichi
Hannon Thomas R.
NSK Ltd.
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