Thrust bearing for rock bits

Details Thrust bearing for rock bits Thrust bearing for rock bits

1982-07-09

1983-11-22

Levy, Stuart S.

Bearings

Rotary bearing

Roller drill bit

175372, F16L 3306, E21B 1022

Patent

active

044165544

ABSTRACT:
A chamfered intermediate thrust bearing is positioned between a rotating cutter and its bearing pin of an earth-boring rock bit. The chamfered intermediate bearing is so configured to be mechanically secured in place within the cone and to take outthrust loads, without rotation, that are directed axially against a radially disposed surface of the roller cone journal as the rock bit works in a borehole.

REFERENCES:
patent: 3995917 (1976-12-01), Quinlan
patent: 4136748 (1979-01-01), Dickerhoff
patent: 4167220 (1979-09-01), Ernst et al.
patent: 4270812 (1981-06-01), Thomas

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