Designed for stable deep-hole drilling in titanium alloys and difficult-to-machine materials, this 8xD carbide drill combines imported submicron carbide, HSR118 heat-resistant coating, optimized point geometry, and reinforced deep-hole flute structure to control cutting heat, reduce chip adhesion, improve chip evacuation, and maintain reliable hole straightness in titanium alloy machining.
The 8xD carbide drill for titanium alloy is developed for deep-hole drilling applications where cutting heat, chip adhesion, chip evacuation, hole straightness, and tool wear are especially difficult to control. Compared with 3xD and 5xD titanium alloy drilling, 8xD applications require stronger coolant support, more stable flute rigidity, and better coating protection over a longer drilling depth.
Titanium alloys such as Ti-6Al-4V, TC4, and Grade 5 titanium have low thermal conductivity, high material toughness, and strong adhesion tendency during machining. In deeper 8xD holes, cutting heat is harder to remove, chips travel a longer distance before leaving the hole, and the cutting edge is more likely to suffer from adhesion, wear, or overload if the drill geometry and coating are not properly matched.
This drill is manufactured from imported MG grade 0.8 μm submicron tungsten carbide rods with 10% cobalt content. Combined with HSR118 heat-resistant coating, optimized point geometry, reinforced deep-hole flute structure, controlled edge preparation, and internal coolant support, it helps improve heat control, reduce chip sticking, support smoother chip evacuation, and maintain stable hole quality in titanium alloy components.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 8xD Carbide Drill for Titanium Alloy | Drill Type | Solid Carbide Drill |
| Hole Depth | 8xD | Application | Deep-hole titanium alloy drilling |
| Workpiece Material | Titanium alloy, Ti-6Al-4V, TC4, Grade 5 titanium, high-temperature alloys | 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 |
|
| 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 toughness and rigidity.
Helps maintain edge stability, tool strength, and drilling accuracy in deep titanium alloy holes.
HSR118 coating is designed for titanium alloy machining where heat and adhesion are major challenges.
It helps reduce chip sticking, protect the cutting edge, and maintain stability under high cutting heat.
30° helix and 138.9° point angle support stable entry and accurate hole positioning.
Split-point design helps reduce drill walking and improves penetration in tough titanium materials.
Reinforced flute geometry improves chip evacuation and tool rigidity in 8xD drilling.
Variable core design and back taper help reduce chip clogging, protect the edge, and maintain hole straightness.
This 8xD carbide drill for titanium alloy is suitable for deep-hole machining in CNC machining centers and precision drilling applications. It is especially useful for titanium alloy components where cutting heat, chip adhesion, chip evacuation, hole straightness, and tool wear must be carefully controlled.
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 deep-hole cast iron drilling, helping improve abrasive wear resistance, powdery chip discharge, edge stability, and hole consistency under suitable machining conditions.
ALTISIXN is a wear-resistant coating used to improve drilling stability in abrasive materials such as cast iron. It helps protect the cutting edge, reduce wear, and support longer tool life during production drilling.
A 5xD drill is used for medium-depth holes, while an 8xD drill is designed for deeper holes that require stronger chip discharge, better rigidity, improved coolant support, and more stable hole straightness.
Internal coolant is recommended when chip discharge and hole quality are critical in deeper holes. However, cast iron can also be machined dry or with external coolant depending on machine conditions, material grade, and application requirements.
Yes. The optimized point geometry, reinforced edge design, and ALTISIXN wear-resistant coating help improve stability when drilling cast surfaces or components with casting skin.
Yes. We support customization based on drawings, cast iron grade, diameter, hole depth, coolant method, ALTISIXN coating requirement, and drilling application.
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