Lubricating device

Details Lubricating device Lubricating device

E - Fixed Constructions

21

B

255/73

E21B 10/24 (2006.01) F16N 7/00 (2006.01)

Patent

CA 1128494

ABSTRACT 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 thereof through a cooling passage, and a lubricant is delivered to the cooling passage from a lubricant reservoir. For purposes of making possible addition of lubricant to waterfree fluid the cooling passage is disposed radially inwardly of a passage for flushing fluid.

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