该mainstructure特点：

1.采用高强度和高韧性硬质合金齿，从而提高theability抵抗冲击的牙齿，减少齿破碎率;

2.牙排数，齿数，齿高和独特的alloytooth造型Optimizationdesign充分发挥了钻头切削和切割速度;

3.使用circliplocking锥，可承受高压力;

4. Antifrictionalloy内孔焊接增加轴承的抗惊厥能力;

5.使用highsaturation丁腈橡胶O形 - 环andTricone bitseal压缩优化提高了可靠性ofbearing密封;

6.使用limitpressure和防止橡胶管钻井液进入lubricationsystem，其提供良好的润滑的轴承系统，并确保thatthe O形圈的正常工作和提高钻头的工作寿命;

7.使用新的润滑脂，它canbear 250高温 ℃ 和低磨损，这improvethe位的能力密封的耐高温润滑系统。

The mainstructure characteristics:

1. Uses the highstrength and high toughness of cemented carbide tooth, which improves theability to resist impact teeth and reduce tooth broken rate;

2. Optimizationdesign of the tooth row number, number of teeth, teeth height and unique alloytooth shape gives full play to the bit cutting and cutting speed;

3. Use circliplocking cone, which can bear high pressure;

4. Antifrictionalloy inner hole weld increases bearing anti-seizure ability;

5. Use highsaturation Ding nitrile rubber O – ring andTricone bitseal compression optimization improves the reliability ofbearing seal;

6. Use the limitpressure and prevent the rubber tube drilling fluid into the lubricationsystem, which supply good lubrication for the bearing system and ensure thatthe O ring the normal work and improve the work life of drill bit;

7. Use new grease which canbear high temperature of 250 ℃ and low wear, which improvethe ability of bit sealed lubrication system of high temperature resistance.