Designed for stable deep-hole drilling in aluminum and non-ferrous materials, this 8xD carbide drill features DLC low-friction coating, sharp cutting edges, optimized flute geometry, and reliable coolant support to reduce chip adhesion, improve long chip evacuation, prevent hole wall scratches, and maintain clean hole quality in deeper aluminum drilling applications.
The 8xD carbide drill for aluminum is developed for deeper hole machining in aluminum, aluminum alloys, cast aluminum, and other non-ferrous materials. Compared with 3xD or 5xD drilling, 8xD aluminum drilling requires stronger chip evacuation, smoother flute performance, better coolant delivery, and more stable hole straightness over a longer drilling depth.
Aluminum materials are soft and adhesive during drilling, often producing long chips that can easily wrap around the tool, accumulate inside the flute, scratch the hole wall, or form built-up edge on the cutting edge. In deeper 8xD holes, these problems become more obvious because chip evacuation distance is longer and cutting heat is harder to remove.
This 8xD carbide drill uses DLC low-friction coating to help reduce aluminum adhesion and improve chip flow. Combined with sharp cutting geometry, optimized flute structure, controlled edge preparation, and internal coolant support, it helps deliver cleaner hole walls, smoother chip evacuation, and more reliable drilling performance in aluminum component machining.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 8xD Carbide Drill for Aluminum | Drill Type | Solid Carbide Drill |
| Hole Depth | 8xD | Application | Deep-hole aluminum drilling |
| Workpiece Material | Aluminum, aluminum alloys, cast aluminum, 6061, 7075, 6082, non-ferrous metals | Carbide Material | Imported MG Grade 0.8 μm Tungsten Carbide |
| Cobalt Content | 10% | Helix Angle | 30° |
| Point Angle | 138.9° | Rake Angle | 16° |
| Negative Chamfer | -6° | Core Design | 30–40% Variable Core Diameter |
| Back Taper | 0.8° | Coating | DLC Low-Friction Coating |
| Coating Hardness | 2000–4000 HV | Friction Coefficient | 0.05–0.15 |
| Coolant Type | Internal Coolant / External Coolant Available | Tool Life | Up to 80–100 Meters Under Suitable Machining Conditions |
| Service | Regrinding and Customization Available |
| Drill Diameter (mm) | Flute Length (mm) | Shank Diameter (mm) | Overall Length (mm) | Hole Depth | Coolant Type | Availability |
|---|---|---|---|---|---|---|
| D3.00-D3.30 | 30 | 4 | 70 | 8xD | Internal / External | Standard |
| D3.40-D3.70 | 35.5 | 4 | 75 | 8xD | Internal / External | Standard |
| D3.80-D4.00 | 42 | 4 | 83 | 8xD | Internal / External | Standard |
| D4.10-D5.00 | 50 | 6 | 90 | 8xD | Internal / External | Standard |
| D5.10-D6.00 | 57 | 6 | 97 | 8xD | Internal / External | Standard |
| D6.10-D6.80 | 66 | 8 | 106 | 8xD | Internal / External | Standard |
| D6.90-D8.00 | 76 | 8 | 116 | 8xD | Internal / External | Standard |
| D8.10-D10.0 | 95 | 10 | 139 | 8xD | Internal / External | Standard |
| D10.1-D12.0 | 114 | 12 | 163 | 8xD | Internal / External | Standard |
| D12.1-D14.0 | 133 | 14 | 182 | 8xD | Internal / External | Standard |
| D14.1-D16.0 | 152 | 16 | 204 | 8xD | Internal / External | Standard |
| D16.1-D18.0 | 171 | 18 | 223 | 8xD | Internal / External | Standard |
| D18.1-D20.0 | 190 | 20 | 244 | 8xD | Internal / External | Standard |
Key Features
Made from imported 0.8 μm submicron carbide with 10% cobalt for rigidity and edge stability.
Helps maintain stable drilling performance and hole straightness in deeper aluminum holes.
DLC coating helps reduce friction and aluminum adhesion during high-speed drilling.
It supports smoother chip flow, reduced built-up edge, and cleaner hole wall quality.
30° helix and 138.9° point angle support stable entry and accurate hole positioning.
Split-point design helps reduce drill walking and improves penetration into aluminum materials.
Optimized flute geometry improves long chip evacuation in 8xD deep aluminum drilling.
Variable core design and back taper help improve rigidity, reduce chip clogging, and protect hole quality.
This 8xD carbide drill for aluminum is suitable for deeper hole machining in CNC machining centers and production drilling applications. It is especially useful for aluminum components where long chip evacuation, chip adhesion control, hole wall quality, coolant delivery, and hole straightness 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
8xD means the drill is designed for hole depths up to 8 times the drill diameter.
Yes. This drill is designed for aluminum and non-ferrous material drilling, helping reduce chip adhesion, improve long chip evacuation, and maintain clean hole quality in deeper holes.
Yes. Internal coolant is recommended for 8xD aluminum drilling because it helps remove chips, control heat, and protect hole wall quality in deeper holes.
In 8xD holes, chips travel a longer distance before leaving the hole. If chip evacuation is not smooth, chips may clog the flute, scratch the hole wall, increase cutting resistance, or damage the cutting edge.
DLC coating provides a low-friction surface that helps reduce aluminum adhesion, built-up edge, and chip sticking during drilling. It is suitable for aluminum and other non-ferrous materials.
It is suitable for aluminum, aluminum alloys, cast aluminum, 6061, 7075, 6082, 2024 aluminum, and other non-ferrous materials under suitable machining conditions.
Yes. We support customization based on drawings, diameter, hole depth, coolant method, DLC coating requirement, flute design, and aluminum machining requirements.
Explore Our Products
We use cookies to collect information about how you use this site. We use this information to make the website work as well as possible and improve our services.more details
