Temperature-regulated, sealed bearing system afor rock drill...

Details Temperature-regulated, sealed bearing system afor rock drill... Temperature-regulated, sealed bearing system afor rock drill...

E - Fixed Constructions

21

B

255/78

E21B 10/00 (2006.01)

Patent

CA 1047025

ABSTRACT OF THE DISCLOSURE The present invention relates to an improved rock drill bit assembly primarily adapted for earth boring operations. In the conven- tional earth boring operation, a rock drill bit assembly is fastened axially to the boring and of a drill string. When a component element fails within the rock drill bit assembly during earth boring operations, it necessitates the costly operation of physically removing the entire drill string from the wellbore. Bearing failure is the major cause of rock drill bit assembly failure. The present invention provided a rock drill bit assembly having therewithin a temperature-controlled, sealed environ being adapted for the bearing means and the lubricant disposed between the relatively rotatable parts thereof.

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