Lubricating device

Details Lubricating device Lubricating device

E - Fixed Constructions

21

B

255/73

E21B 10/24 (2006.01)

Patent

CA 1161831

ABSTRACT OF THE DISCLOSURE A device for lubricating rotary drill bits of the type comprising a roller cutter which is rotatably carried by means of a bearing system. Fluid is supplied to the bearing system for cooling and/or cleaning thereof through a passage, and a lubricant is delivered to said passage from a body of porous material, which is soaked in lubricating means. For purposes of controlling the supply of lubricating means the porous member forms a fraction of the inner wall of said passage.

385966

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