1.切削结构

具有不同的切割操作，锥形插入体放置在永久的接触面积和楔插入物放置在

替代的接触面积，以使钻井效率大大提高。 磨损切削阻力

结构是通过设置钻石镶在锥体那里的永久接触面积增加

刀片磨损严重。 钨硬质合金刀片放在锥顶面保护锥

人体免受磨损的。

2.计结构

随着对位体激活切割仪保护插入，该位具有良好的仪表保护衬垫

对位体，该位具有良好的仪表保护措施，钻取功能

3.轴承结构

高精度径向滑动轴承，球锁定锥。 硬面听到轴承表面。 锥轴承

镶嵌着减小摩擦的合金。 耐磨性和轴承的耐发热胶着性提高。 相比

三牙轮钻头，腿轴承较大，所以它可以接收更高钻压和高可靠性。

1. Cutting structure

Having different cutting actions, conical inserts are placed in permanent contact area and wedge inserts are placed in

alternative contact area so that the drilling efficiency is greatly improved. Wear resistance of cutting

structure is enhanced by setting diamond inserts in the permanent contact area of the cone where

inserts are severely worn. Tungsten carbide inserts are placed on cone top face to protect cone

body from abrasive erosion.

2. Gauge Structure

With active cutting gauge protection inserts on bit body, the bit has good gauge protection inserts

on bit body, the bit has good gauge protection and up drill capability

3. Bearing Structure

High precision journal bearing, Ball lock the cone. Hardface heard bearing surface. Cone bearing

inlaid with friction reducing alloy. Abrasion resistance and seizure resistance of the bearing are improved. Compared

with three cone bit, the leg bearing is bigger, so it can receive higher WOB and high reliability.