Trépan tricône TCI - Trépans tricônes - Chenghui Dri...

Trépan tricône TCI

Name: Trépan tricône TCI
Brand: Chenghui Drilling Tools

Type: TCI / Tungsten Carbide Insert
Structure: Three-Cone Roller Bit
IADC Range: 417–737
Utilisation : Mining / Water Well / Oilfield / Rotary Drilling
Formation : Soft to Hard / Abrasive Rock
Customization: IADC / Size / Thread / Insert Shape

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Description

Product Snapshot

TCI Tricone Drill Bit for Rock Drilling

TCI Tricone Drill Bit uses high-strength tungsten carbide inserts mounted in three rotating cones to provide efficient rock crushing, strong wear resistance and reliable rotary drilling performance.

Different IADC codes, insert shapes, bearing structures and gauge protection options are available to match formations ranging from soft and highly drillable rock to medium-hard and abrasive formations.

Type TCI / Tungsten Carbide Insert	Structure Three-Cone Roller Bit	IADC Range 417–737
Application Mining / Water Well / Oilfield / Rotary Drilling	Formation Soft to Hard / Abrasive Rock	Customization IADC / Size / Thread / Insert Shape

Key Features

Reliable rock crushing for rotary drilling

Six design advantages behind the TCI Tricone Drill Bit.

01 / 06

Tungsten Carbide Insert Cutting Structure

High-quality tungsten carbide inserts improve wear resistance and maintain stable cutting performance in abrasive formations.

02 / 06

Three-Cone Rock Crushing

Three rotating cones crush the formation through rolling and impact action, providing efficient rotary drilling.

03 / 06

Multiple IADC Configurations

Different IADC codes are available to match soft, medium and hard formations.

04 / 06

Reinforced Gauge Protection

Gauge inserts and hardfacing can improve gauge holding capability and reduce outer-diameter wear.

05 / 06

High-Precision Bearing Structure

Journal bearing designs can improve cone stability and bearing life under high drilling loads.

06 / 06

Reliable Sealing & Lubrication

Sealed bearing structures and lubrication systems help protect internal components from drilling debris and contamination.

Applications & Formations

Used across mining, water well and oilfield drilling

TCI tricone drill bits are commonly used for mining drilling, water well drilling, oil and gas drilling and quarry drilling. Other applications include blast hole drilling, geothermal drilling, foundation drilling, reverse circulation drilling and construction drilling.

01 Mining Drilling Reliable drilling for mining, blast hole and quarry production projects.	02 Water Well Drilling Efficient rotary drilling for water well projects in varied formations.
03 Oil & Gas Drilling Suited to oilfield rotary drilling where TCI wear resistance is required.	04 Quarry Drilling Stable rotary performance for quarry and rock extraction projects.

Suitable Rock Formations by IADC

IADC Code	Suitable Formations
417 / 427 / 437	Very soft formations with low compressive strength and high drillability — shale, clay, sandstone, conglomerate.
447	Soft formations — shale, clay, sandstone, soft limestone, rock salt, gypsum.
517 / 527	Soft formations with low compressive strength — shale, clay, sandstone, soft limestone.
537 / 547	Soft-to-medium formations and formations with harder abrasive interbeds — hard shale, soft limestone, sandstone, interbedded dolomite.
617 / 627	Medium-hard formations with higher compressive strength and harder interbeds — hard shale, dolomite, limestone, sandstone, marble.
637 / 737	Medium-hard and highly abrasive formations — limestone, marble, sandstone, conglomerate, other abrasive rock formations.

⚠️ Note: The final IADC code and bit configuration should be selected according to formation hardness, abrasiveness, compressive strength and drilling parameters.

IADC Selection Guide

Recommended IADC codes and drilling parameters

The table below lists recommended IADC codes, formation types and typical drilling parameters. Actual parameters should be adjusted according to rig capability and formation response.

IADC Code	Formation Type	Recommended WOB (kN/mm)	Recommended RPM
417 / 427 / 437	Very soft, high drillability formations	0.35–0.90	140–70
447	Soft formations	0.37–1.00	140–60
517	Soft formations	0.37–1.05	120–50
527	Soft formations	0.35–1.05	120–50
537 / 547	Soft-medium, abrasive interbeds	0.50–1.05	110–40
617 / 627	Medium-hard formations	0.50–1.05	80–40
637 / 737	Medium-hard, highly abrasive formations	0.70–1.20	70–40

Note: WOB and RPM values are for reference. Actual parameters should be adjusted according to rig capability, bit diameter and formation response.

Cutting Structure

Tungsten carbide insert shapes

High-quality tungsten carbide inserts are used to improve overall mechanical performance and wear resistance. Different insert shapes can be selected according to formation conditions.

Conical Inserts

Suitable for soft to medium formations where efficient penetration is required.

Chisel Inserts

Provide aggressive cutting for soft to medium-hard formations.

Spherical / Hemispherical

Designed for harder formations requiring impact resistance and wear resistance.

Customized Profiles

Custom insert profiles available for specific formation requirements.

Gauge Protection

Maintain borehole diameter and extend bit life

Multiple gauge protection methods can be used to help maintain borehole diameter and extend bit life in abrasive formations.

Gauge Carbide Inserts Carbide inserts placed on the gauge row help resist outer-diameter wear.	Heel-Row Gauge Protection Heel-row inserts provide additional gauge protection during rotation.
Shirttail Hardfacing Hardfacing applied to the shirttail helps reduce wear in abrasive formations.	Reinforced Outer Gauge Structure Reinforced outer structure improves gauge holding capability under demanding drilling loads.

Bearing Structure

High-precision journal bearing options

High-precision journal bearing structures can be selected for demanding drilling conditions. Typical features improve abrasion resistance and reduce seizure risk under heavy rotary drilling loads.

Dual Thrust Surfaces Dual thrust surfaces help distribute axial loads during rotation.	Cone Locking System Cone locking design helps maintain cone positioning under drilling loads.	Hardfaced Bearing Surfaces Hardfaced surfaces improve abrasion resistance and bearing life.
Friction-Reducing Alloy Friction-reducing alloys help reduce heat and wear in bearing interfaces.	Silver-Plated Interfaces Silver-plated bearing interfaces help reduce friction and improve durability.	Application These features improve abrasion resistance and reduce seizure risk under heavy rotary loads.

Seal & Lubrication

Protect the bearing system from drilling debris

Available sealed configurations can protect internal components from drilling fluid and abrasive cuttings.

HNBR O-Ring Sealing HNBR sealing material provides good resistance to drilling fluids and high temperatures.	Optimized Seal Compression Controlled seal compression helps maintain reliable sealing performance.
Pressure Compensation Pressure compensation helps balance internal and external pressure in deep drilling.	High-Performance Grease High-performance grease lubrication helps protect bearings from heat and wear.

How to Select

How to select the right TCI tricone bit

To recommend a suitable configuration, please provide the following information. Our engineers will respond with a factory quotation within 24 hours.

01 Required Bit Diameter Bit diameter and connection requirements.	02 IADC Code For example: 517 / 537 / 617 / 637	03 Rock Formation Shale / Limestone / Sandstone / Dolomite / Granite, etc.
04 Hardness & Abrasiveness Formation hardness and abrasiveness level.	05 Thread Connection API REG or other thread connection type.	06 Drilling Rig Information Rig model and drilling parameters.
07 Required Bearing Type Open / Sealed / Journal Bearing

💡 Not sure about the IADC code?
Send us your rock formation and drilling conditions. Our team can recommend a suitable tricone configuration.

Factory Customization

Customized TCI tricone drill bit solutions

Every drilling project is different. Chenghui Drilling customizes each tricone bit based on your project data — from IADC code to seal structure.

Formation type, drilling rig, drilling parameters and required wear resistance all affect tricone bit performance. Our engineering team works with your technical data to recommend the most suitable IADC code, insert shape and bearing structure.

— Bit Diameter	— IADC Code
— TCI Insert Shape	— Insert Density
— Gauge Protection	— Bearing Structure
— Seal Structure	— Thread Connection
— Hardfacing	— OEM Marking & Packaging

CNC machining of TCI tricone bit components

About Chenghui Drilling

Professional drilling tools manufacturer in China

Chenghui Drilling Co., Ltd. specializes in the design, production and supply of PDC drill bits, tricone drill bits, DTH drilling tools and related drilling equipment for customers worldwide.

Every drill bit is manufactured and inspected in our own factory, ensuring stable quality, competitive pricing and reliable delivery for international drilling contractors and distributors.

Supply Mode Factory Direct	Fabrication In-House
Service OEM / ODM	Market Global Export

Chenghui Drilling Tools production workshop

Get In Touch

Need a customized TCI Tricone Drill Bit?

Share your drilling requirements with our engineers. We will recommend a suitable IADC code, insert shape and bearing structure, and provide a factory quotation within 24 hours.

1. Required Bit Diameter	2. IADC Code
3. Rock Formation	4. Thread Connection

📩 Request Quote
Contact Engineer

FAQ

1
What is a TCI Tricone Drill Bit?
+

A TCI Tricone Drill Bit uses tungsten carbide inserts mounted in three rotating cones to crush and break rock during rotary drilling. It is designed for strong wear resistance and reliable performance in demanding formations.

2
What formations are TCI tricone bits suitable for?
+

Different IADC configurations are available for soft, medium and hard formations, including shale, sandstone, limestone, dolomite, marble and abrasive rock.

3
How do I choose the correct IADC code?
+

The IADC code should be selected according to rock hardness, abrasiveness, compressive strength and drilling conditions. If you provide the formation information, we can recommend a suitable IADC configuration.

4
What bearing options are available?
+

Depending on the model and drilling application, TCI tricone bits can be supplied with open bearing, sealed bearing or journal bearing structures.

5
Can you customize TCI Tricone Drill Bits?
+

Yes. We can customize bit diameter, IADC code, carbide insert shape, insert density, gauge protection, bearing structure, thread connection, hardfacing, product marking and packaging according to your drilling requirements.

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Trépan tricône TCI