Ball bearing

Details Ball bearing Ball bearing

1999-08-24

2000-11-28

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

384462, F16C 3358, F16C 3366

Patent

active

061526053

ABSTRACT:
A ball bearing in which races are well prevented from flaking in early stages under an environment using lubricating oil having a high traction coefficient so that a long life of the ball bearing is attained, while the cost of the bearing is reduced. The ball bearing has a plurality of balls disposed between a fixed race and a rotating race, and the ball bearing is used under an environment using lubricating oil having a traction coefficient of 0.07 or more under the conditions that a slip factor is 5% and a temperature is 40.degree. C. At least the groove radius of the rotating race is set to be in a range of from 0.53 Dw to 0.58 Dw both inclusive when Dw designates the diameter of balls. In addition, the hardness of the race is set to be in a range of from HRC 58 to HRC 64 both inclusive.

REFERENCES:
patent: H885 (1991-02-01), Nagashima
patent: 3370899 (1968-02-01), Eklund
patent: 4334721 (1982-06-01), Satoh et al.
patent: 4343521 (1982-08-01), Akabane et al.
patent: 4565457 (1986-01-01), Flander

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