
With high precision bearings with neck to slide, two way thrust bearing; Tooth palm bearing surfact surfacing hard alloy and cone bearing with reduced after welding together gold sliver, improve the bearing capacity and resistence to bite ability.
Description
1) High-strength, high flexibility, high temperature, high wear resistance.
2) High-precision metal seal.
3) locking roller ball, to adapt to high-speed.
4) The use of high strength hig toughness carbide teeth.
5) Hours in the rotary cone bit with the impact, crushing and shearing the role of broken rock.
6) cone bit to adapt to the soft, medium and hard of various strata.
7) Reasonable price and long working life.
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