3xD Micro Carbide Drills

3xD Micro Carbide Drills

Precision solid carbide micro drills designed for short, small-diameter holes in steel, stainless steel, cast iron, aluminum, and titanium alloys. Fine-grain carbide, material-specific geometries, controlled edge preparation, and precision inspection help support stable entry, low cutting resistance, and consistent micro-hole quality.

High Rigidity for Short Micro Holes

Stable Entry and Hole Positioning

Material-Specific Geometry and Coating

Precision Edge and Profile Inspection

3xD Micro Carbide Drills for Precision Small-Hole Machining

The 3xD micro carbide drill series is designed for short, small-diameter holes requiring high rigidity, stable entry, consistent cutting edges, and accurate positioning. Its short working length helps reduce deflection and improve micro-hole stability. Because micro drills are highly sensitive to spindle runout, holder condition, chip congestion, coolant delivery, and workpiece clamping, precise machining conditions are essential for stable batch production and reduced breakage risk. Landun 3xD micro drills are available with material-specific geometries and coatings for steel, stainless steel, cast iron, aluminum, titanium, and other precision engineering materials.

3xD Micro Carbide Drills Application Range & Hole Features

Short Micro Through Holes

Suitable for short through holes in thin plates, precision parts, inserts, housings, and compact mechanical components.

Shallow Micro Blind Holes

Designed for shallow blind holes requiring controlled depth and consistent small-hole quality.

Precision Positioning Holes

The short and rigid drill structure helps support stable entry and repeatable hole positioning in batch production.

Small Pre-Tapping Holes

Suitable for producing small pilot holes before micro tapping, thread forming, or thread milling.

Electronic Component Holes

Used for micro-hole machining in electronic parts, optical components, connectors, compact housings, and precision assemblies.

Medical and Precision Mechanical Parts

Suitable for small components where burr control, edge consistency, hole location, and tool reliability are important.

How to confirm whether 3xD is suitable

Selection Factor	Recommended for 3xD
Hole Depth	Short holes up to approximately 3× the drill diameter
Hole Type	Micro through holes, shallow blind holes, positioning holes, and small pre-tapping holes
Main Advantage	Short, rigid structure with stable entry and reduced deflection
Chip Evacuation Demand	Stable chip formation and sufficient flute clearance are required
Coolant Method	Selected according to drill diameter, material, coating, and machine conditions
Typical Requirement	Stable positioning, low burr formation, consistent hole quality, and reduced breakage risk

Selection Factor

Recommended for 3xD

Hole Depth

Short holes up to approximately 3× the drill diameter

Hole Type

Micro through holes, shallow blind holes, positioning holes, and small pre-tapping holes

Main Advantage

Short, rigid structure with stable entry and reduced deflection

Chip Evacuation Demand

Stable chip formation and sufficient flute clearance are required

Coolant Method

Selected according to drill diameter, material, coating, and machine conditions

Typical Requirement

Stable positioning, low burr formation, consistent hole quality, and reduced breakage risk

3xD Micro Carbide Drills Related Products

5xD Micro Carbide Drills for Titanium Alloy

Designed for medium-depth micro-hole drilling in titanium alloys and difficult-to-machine materials. MG 0.8 μm carbide, ...

3xD Carbide Drill for Stainless Steel

Optimized for 304, 316L, 17-4PH, and duplex stainless steel drilling. Stable edge strength, heat-resistant coating, and ...

5xD Carbide Drill for Aluminum

Designed for medium-depth drilling in aluminum and non-ferrous materials. Sharp cutting edges and smooth flute geometry ...

8xD Carbide Drill for Steel

Developed for deep-hole drilling in carbon steel, alloy steel, and structural steel. ALTISIXN coating and stable flute g...

Frequently Asked Questions

What are 3xD micro carbide drills used for?

They are used for short, small-diameter through holes, shallow blind holes, positioning holes, pre-tapping holes, and precision holes in compact mechanical, electronic, medical, automotive, and aerospace components.

What materials can 3xD micro carbide drills machine?

Material-specific options are available for steel, stainless steel, cast iron, aluminum alloys, titanium alloys, and other engineering materials.

Is a pilot hole required before using a 3xD micro drill?

A pilot hole is not automatically required for every application. Direct drilling may be suitable on flat and stable surfaces. Curved, inclined, rough, or unstable entry surfaces may require spot drilling or another entry-preparation method.

When should I choose a 5xD micro drill instead?

Choose a 5xD micro drill when the required hole depth exceeds the effective drilling range of a 3xD tool. The machine, holder, coolant, and chip evacuation conditions should also be evaluated.

Can Landun manufacture custom micro 3xD carbide drills?

Yes. Landun can review non-standard diameters, special flute lengths, shank dimensions, point geometries, coating requirements, coolant configurations, drawings, samples, and replacement-tool projects.

What information should I provide for micro-drill selection?

Please provide:

Workpiece material and hardness
Required hole diameter
Required hole depth
Through-hole or blind-hole design
Hole tolerance
Burr and surface-quality requirements
Entry and exit surface conditions
Machine type and maximum spindle speed
Tool-holder information
Expected spindle runout
Coolant or lubrication method
Expected production quantity
Current tool-life or breakage problems

Tell Us Your Requirements

Contact Landun CNC Tool for standard, micro, deep-hole, internal-coolant, flat-bottom, step, and custom solid carbide drills. Send us your drawing, existing tool sample, workpiece material, and hole requirements, and our team will provide an application review and quotation.

Email info@landuntool.com

WhatsApp 8618068789495

Phone +86 18068789495

Address Building 2, No. 35 Taihangshan Road, Xixiashu Town, Xinbei District, Changzhou, China

Micro Carbide Drills Series

3xD Micro Carbide Drills

3xD

0.8 μm

5 Materials

±0.003 mm

Category Overview