High-performance carbide twist drills engineered for short-hole drilling in steel, stainless steel, cast iron, aluminum, and titanium alloys. Material-specific geometries, coating options, and internal or external coolant designs help maintain stable hole accuracy and reliable tool life in batch production.
The 3xD standard carbide drill series is designed for short-hole production drilling where high rigidity, stable entry, and consistent hole positioning are required. Compared with longer drill series, the shorter working length helps reduce deflection and improve drilling stability in through holes, shallow blind holes, mounting holes, threaded-hole preparation, and general production holes. Landun 3xD carbide drills can be selected for steel, stainless steel, cast iron, aluminum alloys, titanium alloy, and other engineering materials according to chip behavior, coating requirements, coolant conditions, and batch production needs.
General through-hole drilling with stable entry and efficient chip evacuation.
Shallow blind-hole machining with accurate depth control.
Used in machine parts, housings, brackets, plates, and fixtures.
Pre-drilling before tapping or thread forming.
Stable drill entry and repeatable hole location.
Repeated short-hole machining across various materials.
Optimized for general-purpose drilling with excellent rigidity and positional accuracy. Ideal for through-holes and short blind-holes in carbon steel, alloy steel, stainless steel, cast iron, and aluminum.
| Selection Factor | Recommended for 3xD |
|---|---|
| Hole Depth | Short holes up to 3× drill diameter |
| Hole Type | Through holes, shallow blind holes, mounting holes, threaded-hole preparation |
| Main Advantage | High rigidity and stable entry |
| Chip Evacuation Demand | Lower than deeper-hole applications |
| Coolant Method | External or model-based coolant selection |
| Typical Requirement | Stable positioning, consistent hole quality, efficient short-hole production |
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 standard carbide drills are used for short-hole production drilling, including through holes, shallow blind holes, mounting holes, threaded-hole preparation, and positioning holes.
The main advantage is high rigidity. The shorter working length helps reduce deflection and supports stable drill entry and consistent hole positioning.
They can be selected for steel, stainless steel, cast iron, aluminum alloys, titanium alloy, and other engineering materials according to the drill model and application conditions.
Choose 5xD or 8xD when the hole depth is greater and chip evacuation, coolant delivery, or hole straightness becomes more important.
Yes. Landun can review non-standard diameters, special lengths, step geometry, flat-bottom holes, coolant requirements, and drawing-based custom drill projects.
Please provide the workpiece material, hole diameter, hole depth, hole type, tolerance, machine information, coolant method, expected quantity, and current machining problem if available.
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