Metal face seal journal bearing .improve the load capacity ,anti-galling ability and stability of the bearing.

 metal face seal journal bearing.new processes of head bearing hardfacing and cone bearing silver plating are used to improve the load capacity ,anti-galling ability and stability of the bearing..various shapes of inserts can be equipped on this series of bits ,including scoop inserts,wedge inserts ,conical-spherical inserts and double spherical in serts,etc .drilling process &formation and bit are efficient integrated by scientific insert shape selection to realizesafety and high effcient drilling.

ZhongCheng Drill Bit Manufacture CO.,LTD

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