Friction bearing couple

Details Friction bearing couple Friction bearing couple

1985-07-26

1986-11-04

Footland, Lenard A.

Bearings

Rotary bearing

Roller drill bit

F16C 1710

Patent

active

046208038

ABSTRACT:
A friction bearing is disclosed, intended for very heavy duty use, for example, as in rotary cone rock bits.
In a pair of structural members having cooperating load bearing surfaces, one such cooperating surface is interrupted by a fine grid of small grooves formed therein to retain lubricant and to produce, over the total bearing surface, the turbulent hydraulic environment normally found only along the line of formation of a hydro-dynamic lubricant film. An extension of the useful life expectancy of the bearing is claimed by thus postponing degradation of the bearing surfaces by metal transfer therebetween due to failure of the hydro-dynamic lubricant film.

REFERENCES:
patent: 1731790 (1929-10-01), Payne
patent: 4232912 (1980-11-01), Williamson
patent: 4248485 (1981-02-01), White et al.

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