Designed for stable deep-hole drilling in aluminum and non-ferrous materials, this 12xD carbide drill combines imported MG grade 0.8 μm carbide, sharp cutting edge preparation, uncoated or DLC coating options, optimized point geometry, reinforced deep-hole flute structure, and internal coolant support to reduce chip adhesion, improve long-chip evacuation, and maintain clean hole wall quality in long-depth aluminum machining.
The 12xD carbide drill for aluminum is designed for deep-hole machining applications where chip evacuation, low cutting resistance, hole wall quality, and drilling stability are critical. Compared with 5xD or 8xD drilling, 12xD aluminum drilling has a longer chip evacuation path and requires smoother flute performance, better chip removal support, and more stable process control.
Aluminum and aluminum alloys are soft and adhesive during drilling. In 12xD deep-hole machining, long aluminum chips may stick to the cutting edge, accumulate inside the flute, scratch the hole wall, or increase cutting resistance. If chip adhesion and chip evacuation are not controlled, hole accuracy, surface finish, and tool life may become unstable.
This 12xD carbide drill is manufactured from imported MG grade 0.8 μm tungsten carbide rods with 10% cobalt content, supporting high-speed cutting and stable tool strength. Uncoated options provide sharp cutting performance for general aluminum drilling, while DLC-coated options offer a low-friction surface to reduce built-up edge, chip sticking, and hole wall scratches in aluminum and non-ferrous material machining.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 12xD Carbide Drill for Aluminum | Drill Type | Solid Carbide Deep-Hole Drill |
| Hole Depth | 12xD | Application | Deep-hole drilling in aluminum and non-ferrous materials |
| Workpiece Material | Aluminum, aluminum alloys, 6061, 7075, cast aluminum, non-ferrous metals | Carbide Material | Imported MG Grade 0.8 μm Tungsten Carbide |
| Cobalt Content | 10% | Coating | Uncoated / DLC Coating Available |
| Passivation Control | ±0.003 mm | Edge Inspection |
|
| Service | Regrinding and Customization Available | Tool Life | Up to 80–150 Meters Under Suitable Machining Conditions |
| Drill Diameter (mm) | Flute Length (mm) | Shank Diameter (mm) | Overall Length (mm) | Hole Depth | Coolant Type | Availability |
|---|---|---|---|---|---|---|
| D3.10-D4.00 | 54 | 4 | 92 | 12xD | Internal / External | Standard |
| D4.10-D4.70 | 64 | 6 | 102 | 12xD | Internal / External | Standard |
| D4.80-D6.00 | 83 | 6 | 121 | 12xD | Internal / External | Standard |
| D6.10-D8.00 | 110 | 8 | 148 | 12xD | Internal / External | Standard |
| D8.10-D10.0 | 138 | 10 | 180 | 12xD | Internal / External | Standard |
| D10.1-D12.0 | 158 | 12 | 206 | 12xD | Internal / External | Standard |
| D12.1-D14.0 | 182 | 14 | 230 | 12xD | Internal / External | Standard |
| D14.0-D16.0 | 208 | 16 | 260 | 12xD | Internal / External | Standard |
| D16.1-D18.0 | 234 | 18 | 285 | 12xD | Internal / External | Standard |
| D18.1-D20.0 | 258 | 20 | 310 | 12xD | Internal / External | Standard |
Key Features
Made from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content.
The fine carbide grain structure helps support tool rigidity, edge sharpness, and stable cutting performance in deep aluminum hole machining.
Uncoated drills provide sharp cutting performance and low cutting resistance for general aluminum deep-hole drilling.
DLC coating provides a low-friction surface that helps reduce aluminum adhesion, built-up edge, chip sticking, and hole wall scratches.
Optimized drill point geometry supports stable entry and accurate hole positioning.
A sharp and stable drill point helps reduce cutting resistance and improve starting accuracy before long-depth drilling.
Reinforced flute geometry supports long-chip evacuation and tool rigidity in 12xD aluminum drilling.
The variable core design and back taper help reduce friction inside the hole, improve chip flow, and maintain cleaner hole wall quality.
This 12xD carbide drill for aluminum is suitable for deep-hole machining in CNC machining centers and production drilling applications. It is especially useful for aluminum components where long-chip evacuation, anti-adhesion performance, clean hole walls, internal coolant support, and batch stability are important.
Send us your material and hole requirements. Our team will recommend the right drill solution.
Landun CNC Tool is a carbide drill manufacturer focused on precision solid carbide drills and custom carbide drill solutions, supported by advanced grinding, strict inspection, and consistent edge preparation.
Production Facility
Geometry Accuracy Control
Edge Inspection Magnification
Edge Passivation Control
Our carbide drills are ground on German WALTER 5-axis grinding machines for sharp cutting edges, stable accuracy, and smooth drilling performance.
We use WALTER HELICHECK PLUS for contour inspection, keeping profile and radius control within 3 μm for reliable geometric precision.
Each carbide drill is inspected at 300x magnification to check edge quality and avoid chipping or saw-tooth defects before shipment.
Manual drill point honing and automatic rubber-bonded diamond abrasive polishing help improve tool life and control edge consistency within ±0.003 mm.
Common Questions
12xD means the drill is designed for hole depths up to 12 times the drill diameter. It is used for deeper hole machining where chip evacuation, tool rigidity, coolant delivery, and hole straightness are more demanding.
Yes. This 12xD carbide drill is suitable for aluminum, aluminum alloys, cast aluminum, and non-ferrous materials under suitable machining conditions.
Uncoated drills are suitable for general aluminum drilling where sharp cutting performance and low cutting resistance are required. DLC-coated drills are recommended when better anti-adhesion performance, lower friction, smoother chip evacuation, and cleaner hole walls are needed.
Aluminum is soft and adhesive. In 12xD deep-hole drilling, long chips travel a longer distance and may stick inside the flute, causing built-up edge, chip clogging, hole wall scratches, or unstable hole accuracy.
An 8xD drill is used for deep-hole drilling, while a 12xD drill is designed for even deeper holes with longer chip evacuation distance. 12xD drilling requires smoother chip flow, stronger coolant support, better flute rigidity, and more careful runout control.
DLC coating provides a low-friction surface that helps reduce aluminum adhesion, chip sticking, and built-up edge. It is especially suitable for aluminum and other non-ferrous materials.
Yes. Internal coolant is recommended for 12xD aluminum drilling because it helps support chip evacuation, reduce chip adhesion, lower cutting temperature, and maintain stable hole wall quality.
Yes. We support customization based on drawings, aluminum grade, diameter, hole depth, coolant method, uncoated or DLC coating requirement, shank size, and drilling application.
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