15xD Deep Hole Carbide Drills for Long-Hole Production

15xD Deep Hole Carbide Drills

Internal-coolant solid carbide drills designed for long-hole machining in steel, stainless steel, cast iron, aluminum, and titanium alloys. Optimized flute geometry, stable guidance, and material-specific cutting edges help control chip evacuation, cutting heat, and hole deviation at depths of up to approximately fifteen times the drill diameter.

Deep-Hole Drilling up to 15xD

Internal Coolant Delivery

Controlled Chip Evacuation

Stable Pilot-Guided Entry

15xD Deep Hole Carbide Drills for Long-Hole Production

The 15xD deep hole carbide drill series is designed for holes beyond the practical range of standard and shorter deep-hole drills. Its extended flute supports depths of up to fifteen times the drill diameter, while internal coolant channels help deliver coolant, remove heat, and evacuate chips. Because 15xD drilling is sensitive to runout, entry accuracy, chip congestion, coolant flow, and machine rigidity, a compatible pilot hole and controlled process are generally recommended. Material-specific geometries, coatings, flute designs, and custom dimensions are available for different deep-hole applications.

15xD Deep Hole Carbide Drills Application Range & Hole Features

Long Through Holes

Suitable for long through holes in housings, blocks, shafts, plates, and precision mechanical components.

Deep Blind Holes

Designed for deep blind holes requiring controlled drilling depth, stable guidance, and reliable chip evacuation.

Hydraulic Manifold Passages

Used for long fluid passages in hydraulic blocks, valve bodies, manifolds, and pressure-control components.

Mold Cooling Channels

Suitable for cooling and temperature-control passages in mold plates, dies, inserts, and tooling components.

Oil and Lubrication Holes

Used for long oil-feed holes, lubrication passages, and internal fluid channels in mechanical assemblies.

Automotive Component Holes

Suitable for crankshafts, engine components, transmission parts, housings, and other automotive deep-hole applications.

How to confirm whether 15xD is suitable

Selection Factor	Recommended for 15xD
Hole Depth	Long holes up to approximately 15× the drill diameter
Hole Type	Through holes, deep blind holes, fluid passages, cooling channels, and lubrication holes
Main Advantage	Extended drilling reach with internal coolant and controlled drill guidance
Chip Evacuation Demand	Requires controlled chip formation, sufficient flute clearance, and stable coolant flow
Hole Straightness	Influenced by pilot accuracy, runout, coolant, drill geometry, and machine rigidity
Typical Requirement	Stable long-hole production with controlled chip evacuation and hole deviation

Selection Factor

Recommended for 15xD

Hole Depth

Long holes up to approximately 15× the drill diameter

Hole Type

Through holes, deep blind holes, fluid passages, cooling channels, and lubrication holes

Main Advantage

Extended drilling reach with internal coolant and controlled drill guidance

Chip Evacuation Demand

Requires controlled chip formation, sufficient flute clearance, and stable coolant flow

Hole Straightness

Influenced by pilot accuracy, runout, coolant, drill geometry, and machine rigidity

Typical Requirement

Stable long-hole production with controlled chip evacuation and hole deviation

15xD Deep Hole Carbide Drills Related Products

3xD Carbide Drill for Cast Iron

Designed for stable short-hole drilling in grey cast iron, ductile iron, and cast components. Wear-resistant coating and...

5xD Carbide Drill for Stainless Steel

Optimized for medium-depth drilling in 304, 316L, 17-4PH, and duplex stainless steel. Stable edge strength and heat-resi...

3xD Micro Carbide Drill for Aluminum

Designed for precision micro-hole drilling in aluminum and non-ferrous materials. MG 0.8 μm carbide, sharp cutting edges...

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, ...

Frequently Asked Questions

What are 15xD deep hole carbide drills used for?

They are used for long through holes, deep blind holes, cooling channels, oil passages, hydraulic manifold holes, and other long-hole applications.

What is the difference between 12xD and 15xD drills?

A 12xD drill is shorter and normally provides greater rigidity. A 15xD drill provides more reach but requires more careful control of pilot-hole accuracy, runout, coolant delivery, chip evacuation, and machine stability.

Does a 15xD drill require a pilot hole?

A compatible pilot hole is generally recommended and may be required depending on the drill design. The tool specification should define the correct pilot diameter, depth, tolerance, and point geometry.

What materials can 15xD carbide drills machine?

Material-specific options can be selected for steel, stainless steel, cast iron, aluminum alloys, titanium alloys, and other engineering materials.

Can Landun manufacture custom 15xD drills?

Yes. Landun can review non-standard diameters, special flute lengths, shank dimensions, coolant-hole designs, point geometries, coatings, step structures, drawings, samples, and replacement-tool projects.

What information should I provide for drill selection?

Please provide:

Workpiece material and hardness
Required hole diameter
Required hole depth
Through-hole or blind-hole design
Hole tolerance and straightness requirements
Entry and exit surface conditions
Intersecting holes or interrupted sections
Machine and spindle information
Tool-holder information
Expected spindle runout
Coolant pressure, flow, and filtration
Workpiece clamping method
Expected production quantity
Current chip-removal, deviation, 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

Deep Hole Carbide Drills Series

15xD Deep Hole Carbide Drills

15XD

Solid Carbide

Through-Tool

Pilot-Guided

Category Overview