Precision roller bearing rock bits

Details Precision roller bearing rock bits Precision roller bearing rock bits

1987-11-18

1988-12-27

Levy, Stuart S.

Bearings

Rotary bearing

Roller drill bit

175371, 384 93, 384548, 384569, E21B 1022, F16C 1926, F16C 3358

Patent

active

047937190

ABSTRACT:
A sealed bearing roller cone rock bit is disclosed having precision roller bearings with very close fits. The bearing package includes highly refined and hardened surface finishes, special roller bearing metal materials and lubricants with specific lube viscosities.

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Spotts, Design of Machine Elements, 12/78, pp. 397-415.

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