About This Category

A Versatile Standard Drill Series
for Everyday Industrial Machining

Our Standard Carbide Drills are engineered to cover the broadest range of everyday drilling applications — from short through-holes in production fixtures to semi-deep blind holes in automotive housings and mold bases. Available in 3xD, 5xD, and 8xD depth ratios, the series handles carbon steel, alloy steel, stainless steel, cast iron, aluminum, and hardened steel. Internal coolant options are available across the range for improved chip evacuation and longer tool life in difficult-to-machine materials.

  • Carbon & Alloy Steel
  • Stainless Steel
  • Cast Iron
  • Aluminum
  • Titanium
  • Hardened Steel
  • 3xD / 5xD / 8xD
  • Internal Coolant Option
General Purpose Drilling

General Purpose Drilling

Optimized for a wide range of drilling tasks across all standard workpiece materials and machining conditions.

Rigid & Stable

Rigid & Stable

Strong core design and precision-ground geometry ensure smooth, stable drilling with minimal runout and vibration.

Multiple Coolant Options

Multiple Coolant Options

Internal or external coolant delivery options for better chip evacuation, lower cutting temperatures, and longer tool life.

Custom Support Available

Custom Support Available

Special diameters, coatings, point angles, and non-standard lengths available on request — manufactured in-house.

Series Navigator

Select the Right Series by Hole Depth

Choose the depth ratio that matches your application — then find the exact geometry and coating for your workpiece material.

3xD Standard Carbide Drills

3xD Standard Carbide Drills

Ideal for general-purpose drilling where hole depth is up to 3× the drill diameter. Maximum rigidity, best positional accuracy, highest allowable feed rates.

  • Ø1.0–20.0 mm
  • TiAlN / AlCrN
  • Coolant Optional
  • DIN 6537

Best for: Short through-holes · Flat-entry surfaces · High-volume automotive & general machining

View 3xD Standard Carbide Drills
5xD Standard Carbide Drills

5xD Standard Carbide Drills

Balanced performance for semi-deep holes up to 5× diameter. Internal coolant channel standard for Ø4.0+ mm — improved chip evacuation in stainless and alloy steel.

  • Ø2.0–20.0 mm
  • TiAlN / AlCrN
  • Through Coolant
  • H7 Tolerance

Best for: Semi-deep blind holes · Stainless & alloy steel · Mold cooling channels

View 5xD Standard Carbide Drills
8xD Standard Carbide Drills

8xD Standard Carbide Drills

Designed for deep blind and through holes where 5xD falls short. Internal coolant is standard. Stable chip evacuation at extended reach in steel, stainless, and aluminum.

  • Ø3.0–20.0 mm
  • TiAlN / AlCrN
  • Through Coolant
  • Extended Reach

Best for: Deep oil passages · Hydraulic bores · Cylinder block drilling · Transmission housings

View 8xD Standard Carbide Drills

Material Selection

Choose by Material

Find the right standard carbide drill according to your workpiece material. Each variant is optimized in grade, geometry, and coating for the specific cutting conditions.
For Steel

For Steel

Stable Machining for Carbon & Alloy Steel
For Stainless Steel

For Stainless Steel

Optimized for High-Alloy Materials
For Aluminum

For Aluminum

Lightweight Material Machining
For Cast Iron

For Cast Iron

High-Load Material Drilling
Note: Alloy properties vary by temper, profile design and application. Please send drawings or samples for engineering review.View the Complete Materials

Quick Comparison

3xD vs 5xD vs 8xD — Which Do You Need?

Specification 3xD Series 5xD Series 8xD Series
Hole Depth Up to 3× Ø Up to 5× Ø Up to 8× Ø
Diameter Range Ø1.0 – 20.0 mm Ø2.0 – 20.0 mm Ø3.0 – 20.0 mm
Internal Coolant Optional Std. from Ø4.0 mm Standard
Rigidity ★★★★★ ★★★★☆ ★★★☆☆
Chip Evacuation ★★★☆☆ ★★★★☆ ★★★★★
Typical Application General machining Semi-deep holes Deep blind holes
Coating Options TiAlN / AlCrN / TiN TiAlN / AlCrN TiAlN / AlCrN
Tolerance H7 achievable H7 achievable H7 achievable
Stock Availability Full range in stock Select sizes in stock Made to order Ø8+

Buyer Protection

Certified CNC Tool Quality

All our cutting tools are manufactured under strict quality control standards. Each product undergoes detailed inspection to ensure dimensional accuracy, coating performance, and long-lasting wear resistance.
View More Certifications
ISO9001 Certified

ISO9001 Certified

Global quality management standard ensuring consistent manufacturing processes and product reliability.

IATF16949 Certified

IATF16949 Certified

Automotive industry-specific certification for precision and performance in vehicle component machining.

Material Traceability

Material Traceability

Every carbide batch is traceable with full material specifications, supporting quality assurance and customer verification.

Regrinding & Customization

Regrinding & Customization

We provide regrinding services and custom tool solutions to extend tool life and meet specific machining requirements.

Our Certifications

Common Questions

Frequently Asked Questions

They are designed for steel, stainless steel, aluminum, and cast iron.

Diameters typically range from ∅1 mm to ∅20 mm, depending on the model.

Available depth ratios include 3xD, 5xD, and 8xD for different applications.

Yes, TiAlN and Nano coatings are offered for improved wear resistance and heat protection.

Yes, they are optimized for stable drilling performance in continuous or high-speed machining environments.

Many models feature internal coolant channels, and external coolant is also compatible.

Landun Cnc Tool

Tell Us Your Requirements

For more information about Landun CNC Tool’s cutting tool solutions, including standard and custom carbide drills, end mills, coatings, and machining support, please feel free to contact our team.

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