Designed for precision micro-hole drilling in steel materials, these 3xD micro carbide drills are manufactured from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content, combined with ALTISIXN coating, controlled edge passivation, and high-precision grinding to improve edge strength, drilling stability, hole accuracy, and tool life in small-diameter steel machining.
The 3xD micro carbide drills for steel are designed for small-diameter hole machining where tool rigidity, edge consistency, hole positioning, and breakage resistance are critical. Compared with standard-size carbide drills, micro drills are more sensitive to runout, cutting edge defects, chip evacuation, and unstable machining conditions.
Steel micro-hole drilling requires a drill with high edge strength, stable coating protection, precise geometry control, and consistent edge preparation. Even a small edge defect may cause hole deviation, burrs, unstable cutting, or premature tool breakage. For this reason, the production and inspection process of micro carbide drills must be more carefully controlled.
These micro carbide drills are manufactured from imported MG grade 0.8 μm tungsten carbide rods with 10% cobalt content, supporting high-speed cutting and stable micro-hole drilling performance. With ALTISIXN coating, manual drill point honing, automatic passivation, Walter Helicheck Plus inspection, and German Walter 5-axis grinding, the drills help deliver reliable hole accuracy, smoother cutting, and longer tool life in precision steel machining.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 3xD Micro Carbide Drills for Steel | Drill Type | Micro Solid Carbide Drill |
| Hole Depth | 3xD | Application | Precision micro-hole drilling in steel |
| Workpiece Material | Carbon steel, alloy steel, structural steel, pre-hardened steel, bearing steel | Carbide Material | Imported MG Grade 0.8 μm Tungsten Carbide |
| Coating | ALTISIXN Wear-Resistant Coating | Cobalt Content | 10% |
| Passivation Control | ±0.003 mm | Tool Life | Up to 80–100 Meters Under Suitable Machining Conditions |
| Service | Regrinding and Customization Available | Available Depth Series | 3xD, 5xD, 8xD, 12xD, up to 30xD |
Key Features
Made from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content.
The fine carbide grain structure helps support high-speed cutting, edge strength, and drilling stability in small-diameter steel holes.
ALTISIXN coating helps improve wear resistance and edge protection during steel micro-drilling.
It supports more stable cutting performance, reduces premature edge wear, and helps extend tool life in precision steel machining.
The drill point is manually honed and chamfer-passivated to improve cutting edge strength.
Automatic rubber-bonded diamond abrasive polishing keeps edge consistency and controls the passivation value within ±0.003 mm.
Produced on German Walter 5-axis high-precision grinding machines to ensure sharp and accurate cutting edges.
Walter Helicheck Plus inspection and 300x magnification checks help control geometry accuracy and prevent edge defects.
These 3xD micro carbide drills for steel are suitable for precision small-hole machining in CNC machining centers, high-speed drilling equipment, and production environments where hole accuracy, edge consistency, and tool reliability 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
3xD means the drill is designed for hole depths up to 3 times the drill diameter. For micro drills, this depth is suitable for stable small-hole machining with better rigidity and positioning control.
Yes. These 3xD micro carbide drills are designed for steel materials, including carbon steel, alloy steel, structural steel, pre-hardened steel, and bearing steel under suitable machining conditions.
This micro carbide drill uses ALTISIXN coating, which helps improve wear resistance, edge protection, and cutting stability in steel micro-hole drilling.
Please provide the workpiece material, drill diameter, hole depth, coolant method, machine type, and required quantity. Drawings or sample photos are also helpful for custom carbide drills.
We use German Walter Helicheck Plus for contour measurement, with profile and radius control within 3 μm. The products are also inspected at 300x magnification to check edge appearance and avoid chipping or saw-tooth defects.
Yes. We support customization based on diameter, hole depth, shank size, coating, workpiece material, drawings, samples, and machining requirements.
Yes. Regrinding service is available depending on drill size, wear condition, and application requirements.
Yes. We can support 1:1 replacement projects for selected Korean and Japanese drill series according to customer samples, drawings, or required specifications.
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