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.