的boththe优势和PDC钻头，更多的三牙轮钻头比双方实力andductility三牙轮钻头大编队，但也可以适用于PDC钻头难以todeal硬夹层和其他复合物的形成。

牙轮钻头具有良好的structuralcharacteristics ：
1与滚动牙轮钻头密封轴承， cylindricalroller体滚动槽放置，在使用性能更好。
（2）在子牙轮钻头推力轴承surfacesrespectively抗磨治疗和硬化，硬化抗drillprotection 。
3使用可承受250 ℃的高温temperaturewear新的润滑脂阻力。
4使用压差极限andprevent钻井液进入润滑system.Improved conebitsoil胶囊全橡胶，轴承的润滑systemprovides了良好的保证。

Tricone rock bit of boththe advantages and PDC drill bits, tricone bit more than for both strength andductility are large formations, but also can be applied to PDC bit difficult todeal with hard interlayer and other complex formation.

Cone bit with good structuralcharacteristics:
1 with the rolling cone bit sealed bearing, cylindricalroller body rolling groove is placed, , with better performance in use.
(2) In sub-cone bit thrust bearing surfacesrespectively antifriction treatment and hardening, hardening anti-drillprotection.
3 using can withstand 250 ° C high temperaturewear resistance of the new grease.
4 using the differential pressure limit andprevent the drilling fluid into the lubrication system.Improved conebitsoil capsule full rubber, the bearing lubrication systemprovides a good guarantee.