Tungsten Carbide Drill Bit

HNCarbide manufactures high-performance tungsten carbide drill bit solutions designed for precision CNC machining of steel, stainless steel, aluminum, cast iron, and titanium alloys. Engineered with advanced geometry and stable cutting edges, our solid carbide drill bits deliver excellent hole accuracy, smooth chip evacuation, and long tool life in demanding production environments.
Our product range covers standard and customized tungsten carbide drill bit sets, including popular sizes such as 1/8 tungsten carbide drill bit, 2mm, 6mm, and 8mm tungsten carbide drill bit, as well as multi-flute designs like 4 flute tungsten carbide drill bit for high-efficiency metal drilling. With strict quality control and flexible customization in diameters, lengths, coatings, and shank types, HNCarbide provides reliable drilling solutions tailored to your CNC machining needs.

Our Tungsten Carbide Drill Bit Product Range

Simplify Complex Contours!
Leveraging advanced CNC grinding technology and strict ISO-compliant quality control, we ensure stable cutting performance, long tool life, and consistent batch-to-batch accuracy.

Tungsten Carbide Drill Bit Product Details

Internal Coolant Tungsten Carbide Drill Bit TiXCo3 Coating

Internal Coolant Tungsten Carbide Drill Bit TiXCo3 Coating

Order Number:
HN-5D-CD

The internal coolant tungsten carbide drill bit with TiXCo3 coating is engineered for high-efficiency and high-precision metal drilling applications. Manufactured from premium solid carbide, this drill bit delivers excellent rigidity, wear resistance, and dimensional stability during continuous machining. The advanced TiXCo3 coating provides superior heat resistance and oxidation protection, significantly extending tool life when drilling steel, stainless steel, and alloy materials.

Equipped with optimized internal coolant channels, this tungsten carbide drill bit ensures effective heat dissipation and rapid chip evacuation, reducing cutting forces and minimizing the risk of built-up edge. The precision-ground cutting edges enable stable performance at higher cutting speeds, making it ideal for CNC machining centers and automated production lines requiring consistent hole quality and long-term reliability.

In-stock products, fast delivery.
RODS & PREFORMS

Grade HN40 is made from submicron WC powder, some speclal additlves added to optimize theproperties with good combination of hardness and toughness.

Its suitable for making drills and miling tools for machining stainless steel, tool steel and heat-resistingalloys.

GradeCobalt content %Grain sizeDensity g/cm³Hardness HRAHardness HV30MPa
Transverse
rupture strength
MPa ·m1/2
Fracture toughness
MPa ·m1/2
HN40100.814.4591.81,5803,60011.8
COATING
Scientific nameCompositionPhysical propertiesFeaturesTypical applications
TiXCo3Advanced nanocomposite multilayer PVD coating based on Ti, Al, Cr and Si; usually built with a TiN or CrTiN adhesion layer, an AlTi(Si)N core and an extremely hard TiSiN nano-composite top layer. Copper-coloured coating designed specifically for hard-machining tools such as solid carbide drills.Nano-hardness: 42–44 GPa (≈4300–4500 HV). Coefficient of friction: ~0.4 (PoD test, room temperature, 50 % humidity). Coating thickness: typically 1–4 µm. Maximum service temperature up to about 1,000–1,100 °C, giving excellent thermal stability and oxidation resistance for high-speed drilling in hard materials.Copper appearance; delivers very high surface quality of the hole and extremely high wear resistance. Our hardest nanocomposite coating, optimized for hard machining and finishing operations in drilling, milling and reaming at very high cutting speeds. Suitable for dry or near-dry machining and for difficult-to-cut, abrasive alloys where long, stable tool life is required.Recommended workpiece materials: hardened steels (up to ~60–64 HRC), stainless steels, tool steels, nickel-based superalloys, cast irons and other hard or abrasive metals. Typical application fields for drills: high-precision deep-hole and high-speed production drilling of dies and moulds, power-train and transmission components, aerospace turbine and structural parts, and other hard-machining operations demanding tight tolerances and excellent hole finish.
Tungsten Carbide Drill Bit Dimensions & Technical Drawings

Our Tungsten Carbide Drill Bit drawings clearly show key Tungsten Carbide Drill Bit dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right Tungsten Carbide Drill Bit sizes for your CNC setup and machining depth before ordering.

Internal Coolant Carbide Drill Bits ALCRONA Coating-HNCarbide-chart
Internal Coolant Carbide Drill Bits ALCRONA Coating-HNCarbide-chart
FAQ

A tungsten carbide drill bit is made from solid carbide material with significantly higher hardness and rigidity than high-speed steel (HSS). Compared to HSS drills, carbide drill bits allow higher cutting speeds, better wear resistance, and improved hole accuracy, especially when drilling steel, stainless steel, and alloy materials. They are commonly used in CNC machining and high-precision metalworking environments.

A tungsten carbide drill bit set provides consistent performance across multiple diameters, making it ideal for workshops and production lines handling varied drilling tasks. Using matched tools from the same set helps ensure uniform cutting behavior, predictable tool life, and reduced setup time in CNC machining operations.

Common sizes include precision diameters such as the 1/8 tungsten carbide drill bit and 2mm tungsten carbide drill bit, as well as larger options like 6mm and 8mm tungsten carbide drill bit for general and heavy-duty metal drilling. Size selection depends on hole requirements, material thickness, and machining conditions.

Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.

For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.

 Yes.

  • OEM:Your logo and brand on tools, labels and boxes, with agreed MOQ.
  • ODM:We work with you to design or optimize tools for your market. NDAs can be signed to protect your projects and drawings.
Yes, for qualified distributors we provide a complete support package:
1.Market protection

Regional or customer protection based on sales targets, avoiding price wars among our partners.

2.Marketing support

Catalogs, brochures, product photos, technical data sheets, online materials.

For key partners, joint promotion, exhibitions and digital marketing support.

3.Stable supply

Safety stock for fast-moving items and forecast-based production.

Priority production and regular shipments to reduce stock-out risk.

4.Worry-free after-sales

Clear quality warranty policy, quick response to claims.

Replacement, credit or other solutions after confirmation of issues.

5.Technical support

Tool selection and cutting parameter advice.

Problem analysis for different materials and machines.

Online training, documents, and when possible, on-site support for key accounts.

Internal Coolant Tungsten Carbide Drill Bit ALCRONA Coating

Order Number:
HN-5D-CD-A

Designed for stable drilling under high thermal load, this internal coolant tungsten carbide drill bit combines solid carbide strength with an advanced ALCRONA coating to achieve reliable performance in metal cutting operations. The coating’s low friction surface reduces heat generation at the cutting zone, helping maintain edge sharpness even at elevated spindle speeds.

The internal coolant system delivers cutting fluid directly to the drill tip, improving chip control and preventing heat concentration inside deep holes. This structure minimizes vibration and improves hole straightness when drilling steel, stainless steel, and alloy materials. With balanced geometry and precise edge preparation, this tungsten carbide drill bit is well suited for CNC machining centers where process stability, repeatability, and tool life are critical.

In-stock products, fast delivery.
RODS & PREFORMS

Grade HN40 is made from submicron WC powder, some speclal additlves added to optimize theproperties with good combination of hardness and toughness.

Its suitable for making drills and miling tools for machining stainless steel, tool steel and heat-resistingalloys.

GradeCobalt content %Grain sizeDensity g/cm³Hardness HRAHardness HV30MPa
Transverse
rupture strength
MPa ·m1/2
Fracture toughness
MPa ·m1/2
HN40100.814.4591.81,5803,60011.8
COATING
Scientific nameCompositionPhysical propertiesFeaturesTypical applications
ALCRONA (AlCrN)Aluminium–chromium nitride (AlCrN) PVD coating, titanium-free; dense, fine-grained structure with high Al/Cr ratio to improve hot hardness and oxidation resistance. Typically deposited as a multi-layer or graded layer on solid carbide or HSS substrates.Hardness: approx. 2800–3200 HV (nano-indentation). Coefficient of friction: ~0.3–0.35 in dry steel cutting. Heat resistance: stable at elevated temperatures, operating temperature up to about 1,000–1,100 °C with excellent hot hardness and oxidation resistance. High adhesion strength to tool substrate; low tendency to micro-chipping at the cutting edge.Dark grey to blue-grey appearance. Titanium-free universal high-performance coating for heavy mechanical loads and high cutting speeds. Very high wear resistance under both low-speed / high-load and high-speed / dry-cut conditions. Good performance in dry or minimum-lubrication drilling, maintaining sharp cutting edges and consistent hole quality over long tool life.Recommended workpiece materials: alloy and carbon steels, pre-hardened and hardened steels, cast irons and high-tensile structural steels. Especially suitable for high-performance carbide or HSS drills used in dry or semi-dry machining. Typical application fields: automotive power-train parts, mould & die holes, general engineering components and high-speed production drilling where long tool life and thermal stability are critical.
Tungsten Carbide Drill Bit Dimensions & Technical Drawings

Our Tungsten Carbide Drill Bit drawings clearly show key Tungsten Carbide Drill Bit dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right Tungsten Carbide Drill Bit sizes for your CNC setup and machining depth before ordering.

Internal Coolant Carbide Drill Bits ALCRONA Coating-HNCarbide-chart
Internal Coolant Carbide Drill Bits ALCRONA Coating-HNCarbide-chart
FAQ

A tungsten carbide drill bit is made from solid carbide material with significantly higher hardness and rigidity than high-speed steel (HSS). Compared to HSS drills, carbide drill bits allow higher cutting speeds, better wear resistance, and improved hole accuracy, especially when drilling steel, stainless steel, and alloy materials. They are commonly used in CNC machining and high-precision metalworking environments.

A tungsten carbide drill bit set provides consistent performance across multiple diameters, making it ideal for workshops and production lines handling varied drilling tasks. Using matched tools from the same set helps ensure uniform cutting behavior, predictable tool life, and reduced setup time in CNC machining operations.

Common sizes include precision diameters such as the 1/8 tungsten carbide drill bit and 2mm tungsten carbide drill bit, as well as larger options like 6mm and 8mm tungsten carbide drill bit for general and heavy-duty metal drilling. Size selection depends on hole requirements, material thickness, and machining conditions.

Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.

For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.

 Yes.

  • OEM:Your logo and brand on tools, labels and boxes, with agreed MOQ.
  • ODM:We work with you to design or optimize tools for your market. NDAs can be signed to protect your projects and drawings.
Yes, for qualified distributors we provide a complete support package:
1.Market protection

Regional or customer protection based on sales targets, avoiding price wars among our partners.

2.Marketing support

Catalogs, brochures, product photos, technical data sheets, online materials.

For key partners, joint promotion, exhibitions and digital marketing support.

3.Stable supply

Safety stock for fast-moving items and forecast-based production.

Priority production and regular shipments to reduce stock-out risk.

4.Worry-free after-sales

Clear quality warranty policy, quick response to claims.

Replacement, credit or other solutions after confirmation of issues.

5.Technical support

Tool selection and cutting parameter advice.

Problem analysis for different materials and machines.

Online training, documents, and when possible, on-site support for key accounts.

External Coolant Tungsten Carbide Drill Bit TiXCo3 Coating

Order Number:
HN-5D-TD

This external coolant tungsten carbide drill bit is developed for flexible metal drilling operations where standard coolant delivery is preferred. Manufactured from high-quality solid carbide, the tool offers strong edge stability and wear resistance for drilling steel, stainless steel, and alloy materials. The TiXCo3 coating provides enhanced thermal protection and oxidation resistance, supporting consistent performance in both low and medium cutting speed applications.

By applying coolant externally, this tungsten carbide drill bit maintains effective chip evacuation and surface finish without the complexity of internal coolant systems. Its robust cutting geometry ensures smooth entry, reduced edge chipping, and reliable hole quality, making it a practical choice for conventional CNC machines, tool rooms, and production environments where simplicity, durability, and cost efficiency are key considerations.

In-stock products, fast delivery.
RODS & PREFORMS

Grade HN40 is made from submicron WC powder, some speclal additlves added to optimize theproperties with good combination of hardness and toughness.

Its suitable for making drills and miling tools for machining stainless steel, tool steel and heat-resistingalloys.

GradeCobalt content %Grain sizeDensity g/cm³Hardness HRAHardness HV30MPa
Transverse
rupture strength
MPa ·m1/2
Fracture toughness
MPa ·m1/2
HN40100.814.4591.81,5803,60011.8
COATING
Scientific nameCompositionPhysical propertiesFeaturesTypical applications
TiXCo3Advanced nanocomposite multilayer PVD coating based on Ti, Al, Cr and Si; usually built with a TiN or CrTiN adhesion layer, an AlTi(Si)N core and an extremely hard TiSiN nano-composite top layer. Copper-coloured coating designed specifically for hard-machining tools such as solid carbide drills.Nano-hardness: 42–44 GPa (≈4300–4500 HV). Coefficient of friction: ~0.4 (PoD test, room temperature, 50 % humidity). Coating thickness: typically 1–4 µm. Maximum service temperature up to about 1,000–1,100 °C, giving excellent thermal stability and oxidation resistance for high-speed drilling in hard materials.Copper appearance; delivers very high surface quality of the hole and extremely high wear resistance. Our hardest nanocomposite coating, optimized for hard machining and finishing operations in drilling, milling and reaming at very high cutting speeds. Suitable for dry or near-dry machining and for difficult-to-cut, abrasive alloys where long, stable tool life is required.Recommended workpiece materials: hardened steels (up to ~60–64 HRC), stainless steels, tool steels, nickel-based superalloys, cast irons and other hard or abrasive metals. Typical application fields for drills: high-precision deep-hole and high-speed production drilling of dies and moulds, power-train and transmission components, aerospace turbine and structural parts, and other hard-machining operations demanding tight tolerances and excellent hole finish.
Tungsten Carbide Drill Bit Dimensions & Technical Drawings

Our Tungsten Carbide Drill Bit drawings clearly show key Tungsten Carbide Drill Bit dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right Tungsten Carbide Drill Bit sizes for your CNC setup and machining depth before ordering.

External Coolant Carbide Drill Bits ALCRONA Coating-HNCarbide-chart
External Coolant Carbide Drill Bits ALCRONA Coating-HNCarbide-chart
FAQ

A tungsten carbide drill bit is made from solid carbide material with significantly higher hardness and rigidity than high-speed steel (HSS). Compared to HSS drills, carbide drill bits allow higher cutting speeds, better wear resistance, and improved hole accuracy, especially when drilling steel, stainless steel, and alloy materials. They are commonly used in CNC machining and high-precision metalworking environments.

A tungsten carbide drill bit set provides consistent performance across multiple diameters, making it ideal for workshops and production lines handling varied drilling tasks. Using matched tools from the same set helps ensure uniform cutting behavior, predictable tool life, and reduced setup time in CNC machining operations.

Common sizes include precision diameters such as the 1/8 tungsten carbide drill bit and 2mm tungsten carbide drill bit, as well as larger options like 6mm and 8mm tungsten carbide drill bit for general and heavy-duty metal drilling. Size selection depends on hole requirements, material thickness, and machining conditions.

Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.

For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.

 Yes.

  • OEM:Your logo and brand on tools, labels and boxes, with agreed MOQ.
  • ODM:We work with you to design or optimize tools for your market. NDAs can be signed to protect your projects and drawings.
Yes, for qualified distributors we provide a complete support package:
1.Market protection

Regional or customer protection based on sales targets, avoiding price wars among our partners.

2.Marketing support

Catalogs, brochures, product photos, technical data sheets, online materials.

For key partners, joint promotion, exhibitions and digital marketing support.

3.Stable supply

Safety stock for fast-moving items and forecast-based production.

Priority production and regular shipments to reduce stock-out risk.

4.Worry-free after-sales

Clear quality warranty policy, quick response to claims.

Replacement, credit or other solutions after confirmation of issues.

5.Technical support

Tool selection and cutting parameter advice.

Problem analysis for different materials and machines.

Online training, documents, and when possible, on-site support for key accounts.

External Coolant Tungsten Carbide Drill Bit ALCRONA Coating

Order Number:
HN-5D-TD-A

The external coolant tungsten carbide drill bit with ALCRONA coating is optimized for high-speed drilling operations requiring smooth cutting action and controlled heat generation. The ALCRONA coating’s low friction characteristics reduce cutting resistance, helping achieve cleaner hole walls and improved surface finish when machining steel, stainless steel, and alloy materials.

Using an external coolant supply, this tungsten carbide drill bit supports straightforward machine setup while maintaining stable chip evacuation during drilling. The solid carbide substrate provides excellent rigidity, allowing consistent performance across a wide range of spindle speeds. This tool is particularly suitable for CNC machining centers, job shops, and production lines that demand reliable drilling performance without internal coolant systems, balancing efficiency, durability, and operational simplicity.

In-stock products, fast delivery.
RODS & PREFORMS

Grade HN40 is made from submicron WC powder, some speclal additlves added to optimize theproperties with good combination of hardness and toughness.

Its suitable for making drills and miling tools for machining stainless steel, tool steel and heat-resistingalloys.

GradeCobalt content %Grain sizeDensity g/cm³Hardness HRAHardness HV30MPa
Transverse
rupture strength
MPa ·m1/2
Fracture toughness
MPa ·m1/2
HN40100.814.4591.81,5803,60011.8
COATING
Scientific nameCompositionPhysical propertiesFeaturesTypical applications
ALCRONA (AlCrN)Aluminium–chromium nitride (AlCrN) PVD coating, titanium-free; dense, fine-grained structure with high Al/Cr ratio to improve hot hardness and oxidation resistance. Typically deposited as a multi-layer or graded layer on solid carbide or HSS substrates.Hardness: approx. 2800–3200 HV (nano-indentation). Coefficient of friction: ~0.3–0.35 in dry steel cutting. Heat resistance: stable at elevated temperatures, operating temperature up to about 1,000–1,100 °C with excellent hot hardness and oxidation resistance. High adhesion strength to tool substrate; low tendency to micro-chipping at the cutting edge.Dark grey to blue-grey appearance. Titanium-free universal high-performance coating for heavy mechanical loads and high cutting speeds. Very high wear resistance under both low-speed / high-load and high-speed / dry-cut conditions. Good performance in dry or minimum-lubrication drilling, maintaining sharp cutting edges and consistent hole quality over long tool life.Recommended workpiece materials: alloy and carbon steels, pre-hardened and hardened steels, cast irons and high-tensile structural steels. Especially suitable for high-performance carbide or HSS drills used in dry or semi-dry machining. Typical application fields: automotive power-train parts, mould & die holes, general engineering components and high-speed production drilling where long tool life and thermal stability are critical.
Tungsten Carbide Drill Bit Dimensions & Technical Drawings

Our Tungsten Carbide Drill Bit drawings clearly show key Tungsten Carbide Drill Bit dimensions such as diameter, radius, flute length and overall length. This helps you confirm the right Tungsten Carbide Drill Bit sizes for your CNC setup and machining depth before ordering.

External Coolant Carbide Drill Bits ALCRONA Coating-HNCarbide-chart
External Coolant Carbide Drill Bits ALCRONA Coating-HNCarbide-chart
FAQ

A tungsten carbide drill bit is made from solid carbide material with significantly higher hardness and rigidity than high-speed steel (HSS). Compared to HSS drills, carbide drill bits allow higher cutting speeds, better wear resistance, and improved hole accuracy, especially when drilling steel, stainless steel, and alloy materials. They are commonly used in CNC machining and high-precision metalworking environments.

A tungsten carbide drill bit set provides consistent performance across multiple diameters, making it ideal for workshops and production lines handling varied drilling tasks. Using matched tools from the same set helps ensure uniform cutting behavior, predictable tool life, and reduced setup time in CNC machining operations.

Common sizes include precision diameters such as the 1/8 tungsten carbide drill bit and 2mm tungsten carbide drill bit, as well as larger options like 6mm and 8mm tungsten carbide drill bit for general and heavy-duty metal drilling. Size selection depends on hole requirements, material thickness, and machining conditions.

Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.

For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.

 Yes.

  • OEM:Your logo and brand on tools, labels and boxes, with agreed MOQ.
  • ODM:We work with you to design or optimize tools for your market. NDAs can be signed to protect your projects and drawings.
Yes, for qualified distributors we provide a complete support package:
1.Market protection

Regional or customer protection based on sales targets, avoiding price wars among our partners.

2.Marketing support

Catalogs, brochures, product photos, technical data sheets, online materials.

For key partners, joint promotion, exhibitions and digital marketing support.

3.Stable supply

Safety stock for fast-moving items and forecast-based production.

Priority production and regular shipments to reduce stock-out risk.

4.Worry-free after-sales

Clear quality warranty policy, quick response to claims.

Replacement, credit or other solutions after confirmation of issues.

5.Technical support

Tool selection and cutting parameter advice.

Problem analysis for different materials and machines.

Online training, documents, and when possible, on-site support for key accounts.

expert advice for drilling holes in aerospace components

Versatile Applications of Tungsten Carbide Drill Bit Solutions

HNCarbide tungsten carbide drill bit products are designed for a wide range of metal drilling applications, covering steel, stainless steel, aluminum, and various alloy materials. With optimized cutting geometry and stable edge strength, these drill bits perform reliably in both general machining and demanding production environments.

Available in multiple diameters and configurations, the tungsten carbide drill bit range supports flexible use across CNC machining centers and conventional drilling machines. From small-batch processing to continuous production, consistent hole quality and process stability help manufacturers improve efficiency while maintaining precise machining results.

Precision and Durability of Tungsten Carbide Drill Bit for Metal Drilling

Engineered for long-term performance, each tungsten carbide drill bit is manufactured from high-quality solid carbide to ensure excellent rigidity and wear resistance. The robust tool structure minimizes vibration during drilling, contributing to improved hole accuracy and reduced tool wear over extended operating cycles.

Carefully balanced flute design and precision-ground cutting edges allow the tungsten carbide drill bit to maintain smooth chip evacuation and stable cutting behavior at different spindle speeds. This makes the tool well suited for workshops and production lines that require dependable drilling performance, predictable tool life, and consistent output quality in metalworking applications.

Advantages That set Us Apart

We Are Commited To Providing High-Quality, Customized solutions At An Affordable price While Also Prioritizing sustainability And ExcellentCustomer Service, These Qualities Make Us A Great choice For Your Tungsten Carbide Drill Bit Needs

HIP sintering Carbide Rods

We Only Use unground tungsten carbide rods with HlP sintering and100% virgin material. Our grade includes lsO K05 to K40, frommachining carbon steel to aluminium, non-ferrous metals andtitanium or we develop grade for your applications.

High-Precision Five-Axis CNC Grinder

As a HNCarbide customer, you can enjoy five-axis high-precisiongrinding machines from Australia’s ANCA or Germany’s Walter. Themodern workshop with constant temperature and humidity ensuresthe accuracy of each Tungsten Carbide Drill Bit.

Upgrade Passivation Service

Each of your tungsten Tungsten Carbide Drill Bit will be sandblasted to effectively remove burrs and improve the finish.

Full Branch Inspection

All HNCarbide’s Tungsten Carbide Drill Bit will be monitored on WALTER HELICHEEK andZOLLER GENlUS 3 to ensure that every dimension is qualified. We arecommitted to controlling the tolerance within 3 UM.

Packaging & Shipping

At HNCarbide, every shipment is meticulously packaged to ensure your tools arrive intact.
Each HNCarbide’s Tungsten Carbide Drill Bit is individually placed in a shock-resistant protective case, labeled with complete specifications, and sealed in moisture-proof packaging material before being boxed.
Large-volume orders are reinforced with double-wall cardboard boxes or wooden crates to maximize safety during international shipping.
We collaborate with reliable logistics partners to ensure goods are delivered quickly and securely to their destination via air freight, sea freight, or express courier.

FAQ

A tungsten carbide drill bit is made from solid carbide material with significantly higher hardness and rigidity than high-speed steel (HSS). Compared to HSS drills, carbide drill bits allow higher cutting speeds, better wear resistance, and improved hole accuracy, especially when drilling steel, stainless steel, and alloy materials. They are commonly used in CNC machining and high-precision metalworking environments.

A tungsten carbide drill bit set provides consistent performance across multiple diameters, making it ideal for workshops and production lines handling varied drilling tasks. Using matched tools from the same set helps ensure uniform cutting behavior, predictable tool life, and reduced setup time in CNC machining operations.

Common sizes include precision diameters such as the 1/8 tungsten carbide drill bit and 2mm tungsten carbide drill bit, as well as larger options like 6mm and 8mm tungsten carbide drill bit for general and heavy-duty metal drilling. Size selection depends on hole requirements, material thickness, and machining conditions.

Yes. We can produce non-standard tools according to your drawings, samples or machining requirements (material, coating, size, tolerance and application). Our engineers will evaluate and provide a quotation and lead time.

For serious buyers and distributors, we can offer free standard samples if in stock. Usually you only need to cover the freight cost. For customized tools, a sample fee may apply, which can be refunded or deducted in bulk orders.

 Yes.

  • OEM:Your logo and brand on tools, labels and boxes, with agreed MOQ.
  • ODM:We work with you to design or optimize tools for your market. NDAs can be signed to protect your projects and drawings.
Yes, for qualified distributors we provide a complete support package:
1.Market protection

Regional or customer protection based on sales targets, avoiding price wars among our partners.

2.Marketing support

Catalogs, brochures, product photos, technical data sheets, online materials.

For key partners, joint promotion, exhibitions and digital marketing support.

3.Stable supply

Safety stock for fast-moving items and forecast-based production.

Priority production and regular shipments to reduce stock-out risk.

4.Worry-free after-sales

Clear quality warranty policy, quick response to claims.

Replacement, credit or other solutions after confirmation of issues.

5.Technical support

Tool selection and cutting parameter advice.

Problem analysis for different materials and machines.

Online training, documents, and when possible, on-site support for key accounts.

Tungsten Carbide Drill Bit: Engineering Principles

In CNC machining and industrial metalworking, drilling accuracy, process stability, and tool life are directly influenced by drill bit selection. The tungsten carbide drill bit has become a standard solution for high-performance metal drilling due to its superior material properties, structural rigidity, and adaptability to advanced cutting conditions. This article provides a technical overview of tungsten carbide drill bits, focusing on material composition, geometry design, coolant strategies, coatings, and application-based selection.

1. Material Composition and Mechanical Properties

A tungsten carbide drill bit is produced from fine-grain tungsten carbide particles bonded with cobalt. Compared with high-speed steel (HSS), solid carbide exhibits significantly higher hardness, compressive strength, and thermal resistance.

These properties allow tungsten carbide drill bits to operate at higher cutting speeds while maintaining cutting edge integrity. The increased rigidity minimizes tool deflection during drilling, which is critical when machining stainless steel, alloy steel, and hardened materials. As a result, carbide drill bits deliver improved hole straightness, dimensional accuracy, and surface finish.

2. Drill Geometry and Cutting Mechanics

Drill geometry plays a decisive role in drilling performance. A well-designed tungsten carbide drill bit features optimized point angle, web thickness, and flute profile to balance cutting efficiency and tool strength.

  • Point angle affects cutting force distribution and centering accuracy

  • Web thickness influences rigidity and torque resistance

  • Flute geometry controls chip evacuation and heat dissipation

In high-load drilling applications, a 4 flute tungsten carbide drill bit provides increased stiffness and improved chip control, particularly when drilling harder materials or using higher feed rates. Proper geometry reduces vibration and prevents edge chipping, ensuring stable and repeatable drilling performance.

3. Coolant Strategies: Internal vs External Coolant

Coolant delivery is a key factor in extending tool life and maintaining cutting stability.

Internal Coolant Tungsten Carbide Drill Bit

Internal coolant drill bits incorporate coolant channels that deliver fluid directly to the cutting edge. This design improves heat removal, enhances chip evacuation, and reduces thermal stress, making it ideal for deep-hole drilling and high-speed machining.

External Coolant Tungsten Carbide Drill Bit

External coolant drill bits rely on standard machine coolant systems. While simpler in design, they remain effective for shallow to medium-depth holes and applications where internal coolant systems are unavailable. External coolant designs are widely used due to ease of setup and cost efficiency.

Both coolant strategies are commonly used, depending on machine capability and process requirements.

4. Coating Technologies and Tool Life Optimization

Advanced coatings significantly enhance the performance of a tungsten carbide drill bit by reducing friction and protecting the cutting edge from heat and oxidation.

  • TiXCo3 coating offers high thermal resistance and oxidation stability, supporting consistent performance in steel and alloy machining.

  • ALCRONA coating features low friction characteristics, enabling higher cutting speeds and improved surface finish in stainless steel and demanding materials.

Selecting the appropriate coating improves tool life, reduces wear, and allows more aggressive cutting parameters without compromising reliability.

5. Diameter Selection and Application Matching

Tungsten carbide drill bits are available in a wide range of diameters to suit different machining tasks. Smaller sizes such as the 1/8 tungsten carbide drill bit and 2mm tungsten carbide drill bit are commonly used for precision components and fine-feature drilling.

Larger diameters like 6mm and 8mm tungsten carbide drill bit are suitable for structural parts and higher material removal requirements. Choosing the correct diameter ensures proper chip evacuation, stable cutting forces, and optimal hole quality.

For operations requiring multiple sizes, tungsten carbide drill bit sets provide standardized performance across various drilling tasks, improving efficiency in production environments.

6. Application Areas and Industrial Use

The tungsten carbide drill bit is widely used across industries such as automotive manufacturing, aerospace, mold making, general engineering, and heavy machinery production. Its ability to deliver consistent results makes it suitable for both prototype machining and large-scale production.

When used as part of a tungsten carbide drill bit set for metal, manufacturers benefit from reduced setup time, consistent tool behavior, and predictable machining outcomes across different materials and components.

7. Selection Guidelines for CNC Machining

Choosing the correct tungsten carbide drill bit requires consideration of several technical factors:

  • Workpiece material and hardness

  • Hole depth and diameter

  • Machine rigidity and spindle speed

  • Coolant type and delivery method

  • Production volume and cycle time

Matching drill design and coating to specific machining conditions ensures stable drilling, extended tool life, and reduced overall tooling cost.

Conclusion

From material composition and geometry design to coolant strategies and coatings, the tungsten carbide drill bit represents a highly engineered solution for precision metal drilling. Proper selection and application enable manufacturers to achieve consistent hole quality, improved efficiency, and long-term process reliability in modern CNC machining environments.

Team & Partners

Before you go, please note that we offer the most up-to-date industry research reports and the most comprehensive product catalogs, so please contact us if you are interested!

Contact us

Before you go, please note that we offer the most up-to-date industry research reports and the most comprehensive product catalogs, so please contact us if you are interested!

Contact us