PCD enhanced radial bearing

Details PCD enhanced radial bearing PCD enhanced radial bearing

1987-05-14

1988-08-16

Petrakes, John

Bearings

Rotary bearing

Plain bearing

384 97, 384285, 175 73, 175320, E21B 402, F16C 3324

Patent

active

047640367

ABSTRACT:
Bearing rings containing PCD faced bearing inserts are mounted adjacent tungsten carbide radial bearing surfaces at the ends of respective bearing sleeves attached to the drive shaft of a down hole well drilling motor, thereby preventing excessive wear at the extremities of the radial bearing surface in controlled and steerable drilling applications.

REFERENCES:
patent: 3879094 (1975-04-01), Tschirky et al.
patent: 4410054 (1983-10-01), Nagel et al.
patent: 4560014 (1985-12-01), Geczy

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