TECH DATA OF 50 INSERT TEETH IADC 637 FOR PILING DRILLING ,HDD REAMERS REAL SHOT OF PACKING-PLYWOOD BOXES FACTORY SELL DIRECTLY-CREAT VALUE FOR YOU YINHAI -Series type of cone bits are assembly parts of Tricone bit and hole opener,its the main cutting structure of a bit. YH Brand Advantages of Single Roller Cone: Cutting Structures Reinforce the comprehensive mechanical properties of cutting tooth by using high quality tungsten carbide inserts of new form , materials and new techniques of insert bit.   Gauges The multiple heels position with gauge trimming on the heel, tungsten carbide and hardfacing on the shirttail, strengthened spear point to enhance the gauge protection.   Bearings Structure designs High precision journal bearing with two thrust faces. Ball locked cones. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and after then silver plated. Abrasion resistance and seizure resistance of the bearing are improved,  suitable for high rotary speed.   Rubber Sealed  and Lubrication The advanced sealed package is composed by two seals and two elastic rubber energineers. The energizer and back-up ring will support the pushing force to make the two metal faces tightly contact. During drilling, the seals are relevant moving, and the energizer are static. This will increase the bearing seal reliability and durability. The compensation system and the high quality bit greasing can limit pressure differential, and greatly increased the lubricating reliability.