14''~24'' hole opener (reamer) with FH or IF connection  

About our products

About the tricone bit

tricone bit Cutting structure: very long widely spaced ,chisel-shaped inserts 

and considerable cone axis offset against center line of bit ensure very high penetration rate .

To secure the bit from diameter loss, the gage protection inserts have got shorter length and 

greater angle of the top.

Formations: long intervals of very soft poorly compacted shales ,sandstone, clays, salts and soft li mestones. 

Size and IADC available: 3 3/4" to 26" IADC 415,435,445,417,437,517,537,617,637,743

1. Metal Sealed Bearing Tricone Bit

----Cutting Structure 

Steel Tooth: Premium tungsten carbide hard facing on the surface, it’s greatly enhance the wear resistance of the tooth.Tungsten Carbide Inserts: Various type high quality tungsten carbide inserts can be equipped on the bits, professional and scientific selection of the inserts as per the different application and drilling process so that to achieve high efficient drilling production.

----Gauge Structure 

Multiple gauge protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.

----Bearing Structure 

Journal bearing and roller bearing types are available to be chosen. Abrasion & seizure resistance, loading capacity, stability of the bearing are well improved, suitable for high speed rotary drilling.

----Seals and Lubrication 

The advanced metal seals improve the reliability and stability of the bearing sealing. Pressure difference type compensating system assures a good greasing lubrication function.

---- IADC

vary from 117--637 applicable for different type formation.

2. Non-Sealed Roller Bearing Tricone Bit

----Cutting Structure 

Steel Tooth: Premium tungsten carbide hard facing on the surface, greatly enhance the wear resistance of the tooth.

----Bearing Structure 

Non-sealed roller bearing. Drilling fluid can enter the bearing directly for cooling;Balls lock the cone which reduces the probability of cone dropping to minimum

---- IADC 

vary from 114--321 applicable for the hole drilling in the upper section with good drillability.

3. Elastomer Sealed Bearing Tricone Bit

----Cutting Structure 

Steel Tooth: Premium tungsten carbide hard facing on the surface, it’s greatly enhance the wear resistance of the tooth.

Tungsten Carbide Inserts: Various type high quality tungsten carbide inserts can be equipped on the bits, professional and scientific selection of the inserts as per the different application and drilling process to achieve high efficient drilling production.

----Gauge Structure

Multiple gauge protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.

----Bearing Structure 

Journal bearing and roller bearing types are available to be chosen. Abrasion & seizure resistance, loading capacity, stability of the bearing are well improved, suitable for high speed rotary drilling.

----Seals and Lubrication 

Premium O-ring, Optimal seal compression and curved seal structure can enhance the seal performance. Pressure difference type compensating system assures a good greasing lubrication function.

---- IADC 

vary from 114--637 applicable for different type formation and different drilling rotary speed.

4. Air Cooling Roller Bearing Tricone Bit

----Cutting Structure 

Tungsten Carbide Inserts: Various type high quality tungsten carbide inserts can be equipped on the bits, professional and scientific selection of the inserts as per the different application and drilling process to achieve high efficient drilling production.

----Gauge Structure 

Multiple gauge protection with gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability.

----Bearing Structure 

Air cooling roller bearing package. Balls lock the cone, which reduces the probability of cone-dropping to minimum. 

---- IADC 

vary from 512--732 applicable for mining.

 Contact me for quotation!  Hengji bits focus on Quality!