PHOTOS  OF  REAL   SHOT   IADC747-YH-Y50-747     GOODS DESCRIPTION-50 INSERTS TEETH FOR HARD FORMATION FAQ: 1.Q:What types of packages do you have? A: Steel box,Wooden case free of fumigation(Ply-wood case);packing can be customized. 2.What are your advantages? YINHAI rock bits is 100% real factory,so the best price and quality for you.And we can provide Usage and welding method of tricone Hard rock cutters. Hope to creat value for you.Welcome to make a video-call to inspect our factory with us by wechat/whatsapp. Type of cone bits are assembly parts of Tricone bit and hole opener,its the main cutting structure of a bit. Advantages of YINHAI Single Roller Cone: The Cutting Structure Reinforce the comprehensive mechanical property of cutting tooth by using high quality tungsten carbide inserts of new form alloy new techniques of insert bit.   The Gauge Structure The multiple heels position with gauge trimming on the heels, tungsten carbide and hardfacing on the shirttail, to strengthen spear point will enhance the gauge protection.   The Bearing Structures High precision journal bearing with two thrust faces. Ball locked cones. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved, and suitable for high rotary speed.   Sealed and Lubrication The advanced journal 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 contacted. In the drilling, the metal seals are relevant moving, and the energizers are static. This will increase the bearing sealed reliability and durability. The compensation system and the high quality bit grease can limit pressure differential, and greatly increase the lubricating reliability.