Tricone Cone Drill Bit Hard Rock Diamond API 5 7/8" 6" 6 1/2" 6 3/4" 149-171mm Tricone Drill Bits

Hard Rock Roller Cone Drill Bits

Designed for extreme compressive strength formations, hard rock roller cone bits

employ interlinked tungsten carbide inserts (TCI) with reinforced tip geometries to

fracture igneous and metamorphic rocks like granite, basalt, and gneiss.

Advanced features include: Achieve 5-8 m/hr penetration rates in ultra-hard quartzitewhile maintaining seal integrity at 25,000 psi pressures. Proprietary heat treatment processescreate dual-phase steel cones with 62 HRC surface hardness, resisting fatigue cracks during

extended drilling cycles. Field-tested in deep geothermal wells and mineral exploration,

they demonstrate 40% longer lifespan than conventional TCI bits in sustained hard rock applications.

Products Description

Notes for the use of roller cone bits:
1 .Before the drill bit is down, it is necessary to confirm that the bottom of the well is clean, free of grit, and no metal falling.
2. Check if the thread connection screw of the roller cone bit is intact and the nozzle is installed properly.
3. Run in hole needs to be stable, avoid stress and prevent drilling.
4. The last joint needs a large displacement to start the rotary table and keep reaming to bottom of the well., fully wash the well to prevent the debris from clogging the nozzle.
5. The shape of the bottom hole should be lightly pressed and slowly turned into contact with the bottom of the well, smalldrilling pressure, low speed, large displacement, small torque, and the speed is 40~60 rev / min, at least 30 minutes.
6. Determine the weight on bit and speed in combination with the actual conditions of the formation.
7. During drilling ahead, the operation should be smooth, drill feeding should be uniform, it is strictly forbidden to lift and release the drill sharply,drill string not well braked and drill string free fall.
8. If it is found that the drill bit stops making progress, the pump pressure increases and decreases obviously, the rate of penetration is suddenly decreased, and the torque is increased, lift the drill to check without delay.

Company Profile

1.What can you buy from us?

DTH drilling rig,Integrated DTH DTH drilling rig ,core drilling rig,highway pile driver,solar pile driver ,anchor pile driver,rotary drill rig ,Top Hammer drill rig,Underground jumbo drill rig ,DTH hammer,screw air compressor,screw air compressor,piston air compressor,pneumatic rock drill ,drill rod,drill bit,PDC drill bit,top hammer drill bit,tricone bit ,spare parts.

2.How can I make payment?

A:You can pay by credit card, TT, Western Union, LC etc.

3.How is the shipment? How long dose it take?

A: For large quantity or heavy products, we ship by sea shipping or land shipping. Shipping efficiency depends on country and city you want to ship to. For small and delicate products, we ship by DHL, UPS, Fedex or TNT. You can also appoint shipping method you like before we ship.

4.How is your quality control?
A: We have our own experienced QC. There will be strict inspection and testing for every order before shipping out.