Short stack bearing assembly

Details Short stack bearing assembly Short stack bearing assembly

1992-02-14

1993-09-28

Hannon, Thomas R.

Bearings

Rotary bearing

Water lubricated propellor shaft or well shaft

175107, 384613, E21B 402, F16C 1910

Patent

active

052482049

ABSTRACT:
A mud motor bearing assembly is disclosed for an oil-lubricated downhole drill mud motor. A number of parallel sets of angular contact ball bearings are located between the mandrel and the bearing housing in a sealed, oil-filled chamber to provide all compressive thrust load bearing, extension thrust load bearing and radial load bearing capacity. Oil filled pistons at each end retard the progress of mud contamination into the inside of the chamber containing the ball bearings.

REFERENCES:
patent: 3754835 (1973-08-01), Ivanov et al.
patent: 4135772 (1979-01-01), Stodt
patent: 4187918 (1980-02-01), Clark
patent: 4546836 (1985-10-01), Dennis et al.
patent: 4577704 (1986-03-01), Aumann
patent: 4683964 (1987-08-01), Wenzel
patent: 5074681 (1991-12-01), Turner

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