






Steel Tooth Tricone Drill Bit
Type: Steel Tooth / Milled Tooth
Structure: Three-Cone Roller Bit
IADC: 116 / 117 / 126 / 127 / 136 / 137 / 216 / 217
Application: Water Well / Mining / Rotary Drilling / Construction
Formation: Soft to Medium Formation
Bearing: Open / Sealed options depending on configuration
Customization: Size / IADC / Tooth Structure / Connection
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Description
Type: Steel Tooth / Milled Tooth
Structure: Three-Cone Roller Bit
IADC: 116 / 117 / 126 / 127 / 136 / 137 / 216 / 217
Application: Water Well / Mining / Rotary Drilling / Construction
Formation: Soft to Medium Formation
Bearing: Open / Sealed options depending on configuration
Customization: Size / IADC / Tooth Structure / Connection
Specifications
Steel Tooth Tricone Drill Bit for Soft Formation Drilling
Steel Tooth Tricone Drill Bit uses machined steel teeth on three rotating cones to provide efficient crushing, scraping and rolling action during rotary drilling.
Compared with TCI bits, the milled-tooth structure is particularly suitable for softer formations where longer and more aggressive teeth can achieve efficient penetration. Available in multiple IADC configurations, diameters, bearing structures and thread connections, with bit sizes matching our TCI tricone product range.
Type Steel Tooth / Milled Tooth | Structure Three-Cone Roller Bit | IADC 116 / 117 / 126 / 127 / 136 / 137 / 216 / 217 |
Application Water Well / Mining / Rotary Drilling / Construction | Formation Soft to Medium Formation | Bearing Open / Sealed options |
Aggressive cutting for soft formations
Six design advantages behind the Steel Tooth Tricone Drill Bit.
01 / 06 Milled Steel Tooth Cutting StructureSteel teeth are machined directly on the cone body, allowing aggressive cutting action in soft formations. | 02 / 06 Fast Penetration in Soft RockLonger and more widely spaced teeth help achieve efficient penetration in soft shale, clay, sandstone and similar formations. | 03 / 06 Three-Cone Rolling ActionThree independently rotating cones provide crushing, scraping and shearing action during rotary drilling. |
04 / 06 Multiple IADC OptionsDifferent IADC structures are available according to formation hardness and drillability. | 05 / 06 Gauge ProtectionGauge protection and hardfacing can be added to help maintain borehole diameter and reduce outer-row wear. | 06 / 06 Bearing OptionsDifferent bearing and sealing structures can be selected according to drilling environment and application. |
Used across water well, mining and construction drilling
Steel tooth tricone drill bits are suitable for water well drilling, mining drilling, geotechnical drilling and rotary drilling. Other applications include reverse circulation drilling, grouting and injection drilling, construction drilling, soft formation drilling and oil and gas drilling in suitable configurations.
01 Water Well DrillingFast penetration for water well projects in soft to medium formations. | 02 Mining DrillingReliable drilling for mining and blast hole operations in soft rock. |
03 Geotechnical DrillingSuited to geotechnical investigation and injection drilling projects. | 04 Rotary DrillingGeneral rotary drilling including reverse circulation applications. |
Suitable Formations by IADC Code
⚠️ Note: The final IADC code and bit configuration should be selected according to formation hardness, abrasiveness, compressive strength and drilling parameters. |
Milled steel tooth cutting structure
The cutting structure of a Steel Tooth Tricone Bit is different from a TCI bit. Instead of pressed carbide inserts, the teeth are machined from the cone steel itself. By changing tooth shape, spacing and exposure, the bit can be adapted to different soft rock and interbedded formations.
Long Teeth Designed for very soft formations where aggressive engagement is required. | Medium Tooth Profiles Suitable for soft-to-medium formations and interbedded conditions. | Tooth Spacing & Exposure Different spacing and exposure available according to formation characteristics. |
Hardfacing on Teeth Hardfacing on tooth surfaces improves wear resistance in abrasive conditions. | Reinforced Gauge Rows Reinforced outer rows improve gauge holding capability and bit life. | Custom Tooth Design Tooth profile, spacing and exposure can be customized for specific formations. |
Protect borehole gauge and extend bit life
Depending on the drilling application, different gauge and wear protection methods can be used to maintain borehole diameter, reduce outer-diameter wear and extend bit life.
Shirttail Hardfacing Applied to the shirttail to reduce wear in abrasive formations. | Gauge Hardfacing Hardfacing on gauge surfaces helps maintain borehole diameter. | Reinforced Heel Teeth Reinforced heel rows provide additional gauge protection during rotation. |
Carbide-Enhanced Gauge Carbide-enhanced protection is available for abrasive formations. | Wear-Resistant Surface Treatment Surface treatments can be applied for additional wear resistance. | Application These features maintain borehole diameter, reduce wear and extend bit life. |
Open, sealed and journal bearing options
Depending on bit size and application, different bearing configurations can be selected to match the drilling environment.
Open Bearing Open BearingSuitable for general rotary drilling and environments where simple structure and flushing are preferred. | Sealed Bearing Sealed BearingHelps protect the bearing system from abrasive drilling debris and contamination. | Journal Bearing Journal BearingAvailable for selected heavy-duty configurations requiring improved load capacity. |
Which tricone bit should you choose?
Steel Tooth and TCI tricone bits are designed for different formations and drilling priorities. The correct choice depends on formation hardness, abrasiveness, penetration requirement and drilling economics.
| Feature | Steel Tooth Tricone | TCI Tricone |
|---|---|---|
| Cutting Structure | Milled steel teeth | Tungsten carbide inserts |
| Main Formation | Soft to medium | Soft to hard / abrasive |
| Penetration | Very good in soft rock | Stable across wider formation range |
| Wear Resistance | Moderate | Higher |
| Typical Use | Soft shale, clay, sandstone | Limestone, dolomite, abrasive rock |
| Cost Position | Usually more economical | Higher-performance option |
Choose Steel Tooth Choose Steel Tooth when:
| Choose TCI Choose TCI when:
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Product parameters and available options
Bit sizes match our TCI tricone product range. Both inch and millimeter sizes are available on request.
| Parameter | Available Options |
|---|---|
| Product | Steel Tooth Tricone Drill Bit |
| Cutting Type | Milled Steel Tooth |
| IADC | 116 / 117 / 126 / 127 / 136 / 137 / 216 / 217 |
| Formation | Soft to Medium |
| Bearing | Open / Sealed / Journal, depending on model |
| Gauge Protection | Standard / Reinforced |
| Thread | API REG / Customized |
| Size | Same range as TCI Tricone Series (inch + mm) |
| OEM | Available |
How to select the right steel tooth 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 Rock Formation Soft shale / Clay / Sandstone / Limestone, etc. | 03 Formation Hardness Formation hardness and abrasiveness level. |
04 IADC Code If known — 116 / 126 / 136 / 216, etc. | 05 Thread Connection API REG or other thread connection type. | 06 Drilling Rig Information Rig model and drilling parameters. |
07 Drilling Application Water well / Mining / Geotechnical / Rotary drilling / Construction | ||
Send us your formation information and drilling conditions. Our team can recommend a suitable steel tooth configuration.
Customized steel tooth tricone bit solutions
Every drilling project is different. Chenghui Drilling customizes each steel tooth tricone bit based on your project data — from IADC code to seal structure.
Formation type, drilling rig, drilling parameters and required penetration rate all affect tricone bit performance. Our engineering team works with your technical data to recommend the most suitable IADC code, tooth profile and bearing structure.
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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.
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Need a customized Steel Tooth Tricone Drill Bit?
Share your drilling requirements with our engineers. We will recommend a suitable IADC code, tooth profile and bearing structure, and provide a factory quotation within 24 hours.
| 1. Required Bit Diameter | 2. Rock Formation |
| 3. Formation Hardness | 4. IADC Code (if known) |
FAQ
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What is a Steel Tooth Tricone Drill Bit?
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What formations are Steel Tooth Tricone Bits suitable for?
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How do I choose the correct IADC code?
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What is the difference between Steel Tooth and TCI Tricone Bits?
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Can you customize Steel Tooth Tricone Drill Bits?
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Downloads
| File | Download |
|---|---|
| CNC-Machining-Center.pdf | Download |












