(1) Cutting Structure of this series tricone rock bit :
The durability of premium tungsten carbide inserts is improved with newformulas and new techniques for insert bit.The wear-resistance of teeth isenhanced with premium tungsten carbide hardfacing on the tooth surfaces forsteel tooth bit.
(2) Gauge Structure of this series tricone rock bit :
Multiple gauge protection with gauge trimmers on heel and gauge inserts on thegauge surface of the cone, tungsten carbide inserts and hardfacing on theshirttail increases gauge holding capability and bearing life.
(3)Bearing Structure of this series tricone rock bit :
High precision bearing with two thrust faces. Balls lock the cone.Hardfaceheard bearing surface. Cone bearing inlaid with friction-reducing alloy andthen silver-plated. Abrasion resistance and seizure resistance of the bearingare improved and suitable for high rotary speed.
(4)Seal and Lubrication of this series tricone rock bit :
The advanced metal seal package consists of two metal seats and two elasticenergizers. Compressed energizers ensure good contact being kept on two sealingsurfaces of metal rings by elastic force, and achieve the bearing seal. In thedrilling, metal seal are relatively dynamic, and the energizers are static.This will improve the reliability and durability of bearing seal. The pressurecompensator system and advanced grease can greatly increase the lubricatingreliability.