Designed for stable medium-depth drilling in steel materials, this 5xD carbide drill combines imported submicron carbide, self-developed high-performance coating, optimized point geometry, and reinforced flute design to improve chip evacuation, hole straightness, wear resistance, and drilling stability in deeper steel hole machining.
The 5xD carbide drill for steel is designed for medium-depth hole machining where drilling stability, chip evacuation, and hole straightness are more demanding than standard short-hole applications. Compared with 3xD drilling, 5xD applications require better flute capacity, stronger tool rigidity, and more stable chip control over a longer cutting depth.
This drill is manufactured from imported MG grade 0.8 μm submicron tungsten carbide rods with 10% cobalt content, providing the toughness and edge strength required for high-speed steel drilling. With optimized point geometry, controlled flute structure, self-developed high-performance coating, and stable edge preparation, it helps reduce drill walking, improve chip removal, and maintain reliable hole quality in steel machining.
For customers processing carbon steel, alloy steel, structural steel, pre-hardened steel, and bearing steel, this 5xD carbide drill provides a stable solution for deeper hole drilling, batch production, and applications requiring consistent hole accuracy.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 5xD Carbide Drill for Steel | Drill Type | Solid Carbide Drill |
| Hole Depth | 5xD | Application | Medium-depth steel drilling |
| Workpiece Material | Carbon steel,alloy steel, structural steel, pre-hardened steel,bearing steel | 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 | Self-Developed High-Performance 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-D3.90 | 28 | 6 | 66 | 5xD | Internal / External | Standard |
| D4.00-D4.70 | 36 | 6 | 74 | 5xD | Internal / External | Standard |
| D4.80-D6.00 | 44 | 6 | 82 | 5xD | Internal / External | Standard |
| D6.10-D8.00 | 53 | 8 | 91 | 5xD | Internal / External | Standard |
| D8.10-D10.0 | 61 | 10 | 103 | 5xD | Internal / External | Standard |
| D10.1-D12.0 | 71 | 12 | 118 | 5xD | Internal / External | Standard |
| D12.1-D14.0 | 77 | 14 | 124 | 5xD | Internal / External | Standard |
| D14.1-D16.0 | 83 | 16 | 133 | 5xD | Internal / External | Standard |
| D16.1-D18.0 | 93 | 18 | 143 | 5xD | Internal / External | Standard |
| D18.1-D20.0 | 101 | 20 | 153 | 5xD | Internal / External | Standard |
Key Features
Made from imported 0.8 μm submicron carbide with 10% cobalt for strength and toughness.
Supports stable cutting performance and edge integrity in medium-depth steel drilling.
Self-developed coating with 2000–4000 HV hardness and low friction improves wear resistance.
Controlled passivation strengthens the cutting edge and helps reduce wear during longer drilling cycles.
30° helix and 138.9° point angle support stable penetration and accurate hole positioning.
Split-point design reduces drill walking and improves cutting stability in steel materials.
16° rake angle and variable core design improve rigidity and chip evacuation in 5xD drilling.
Negative chamfer and back taper help protect the edge and maintain consistent hole quality.
This 5xD carbide drill for steel is suitable for medium-depth hole machining in CNC machining centers and production drilling applications. It is especially suitable for steel components where chip evacuation, hole straightness, cutting stability, and batch consistency 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
5xD means the drill is designed for hole depths up to 5 times the drill diameter.
A 5xD carbide drill is designed for deeper holes than a 3xD drill. It requires stronger chip evacuation, better rigidity, and more stable drilling performance over a longer hole depth.
Yes. This drill is suitable for carbon steel, alloy steel, structural steel, pre-hardened steel, bearing steel, and other steel materials under suitable machining conditions.
Internal coolant is recommended when better chip evacuation and heat control are required. External coolant versions are also available depending on machine conditions and application requirements.
Yes. We support customization based on drawings, diameter, hole depth, coolant method, coating requirement, and steel machining conditions.
Yes. Regrinding service is available to help extend tool usage and reduce total tooling cost.
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