Designed for stable short-hole drilling in cast iron materials, this 3xD carbide drill combines imported submicron carbide, wear-resistant coating, optimized point geometry, and controlled edge preparation to improve edge stability, resist abrasive wear, and maintain reliable hole quality in cast iron machining.
The 3xD carbide drill for cast iron is developed for short-hole drilling applications where abrasive wear, edge chipping, powdery chips, and cast surface conditions can affect tool life and hole consistency. Compared with steel or aluminum drilling, cast iron machining requires stronger edge stability, reliable wear resistance, and stable chip evacuation under dry, external coolant, or internal coolant conditions.
This drill is manufactured from imported MG grade 0.8 μm submicron tungsten carbide rods with 10% cobalt content, providing the hardness, toughness, and edge strength required for cast iron drilling. Its optimized point geometry helps improve hole positioning and entry stability, while the flute structure supports smooth chip discharge and reduces the risk of chip accumulation.
With self-developed high-performance coating, controlled edge passivation, and customizable coolant options, this drill is suitable for customers who need stable drilling performance, longer tool life, and reliable batch production quality in cast iron components.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 3xD Carbide Drill for Cast Iron | Drill Type | Solid Carbide Drill |
| Hole Depth | 3xD | Application | Cast iron short-hole drilling |
| Workpiece Material | Grey cast iron, ductile iron, nodular cast iron, compacted graphite iron | 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-D3.70 | 20 | 4 | 62 | 3xD | Internal / External | Standard |
| D3.80-D4.00 | 24 | 4 | 62 | 3xD | Internal / External | Standard |
| D3.00-D3.70 | 20 | 6 | 62 | 3xD | Internal / External | Standard |
| D3.80-D4.00 | 24 | 6 | 66 | 3xD | Internal / External | Standard |
| D4.80-D6.00 | 28 | 6 | 66 | 3xD | Internal / External | Standard |
| D6.10-D7.00 | 34 | 8 | 79 | 3xD | Internal / External | Standard |
| D7.10-D8.00 | 41 | 8 | 79 | 3xD | Internal / External | Standard |
| D8.10-D10.0 | 47 | 10 | 89 | 3xD | Internal / External | Standard |
| D10.1-D12.0 | 55 | 12 | 102 | 3xD | Internal / External | Standard |
| D12.1-D14.0 | 60 | 14 | 107 | 3xD | Internal / External | Standard |
| D14.1-D16.0 | 65 | 16 | 115 | 3xD | Internal / External | Standard |
| D16.1-D18.0 | 73 | 18 | 123 | 3xD | Internal / External | Standard |
| D18.1-D20.0 | 79 | 20 | 131 | 3xD | Internal / External | Standard |
Key Features
Made from imported 0.8 μm submicron carbide with 10% cobalt for hardness and toughness.
Helps resist abrasive wear and maintain edge stability when drilling cast iron materials.
Self-developed coating with 2000–4000 HV hardness helps improve wear resistance.
Controlled passivation strengthens the cutting edge and reduces chipping during drilling.
30° helix and 138.9° point angle support stable entry and accurate hole positioning.
Split-point design reduces drill walking and improves cutting stability on cast surfaces.
16° rake angle and variable core design improve rigidity and chip discharge.
Negative chamfer and back taper help protect the edge and maintain consistent hole quality.
This 3xD carbide drill for cast iron is suitable for short-depth hole machining in CNC machining centers and production drilling applications. It is especially suitable for cast iron components where abrasive wear, powdery chips, cast surface variation, and batch consistency must be 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
3xD means the drill is designed for hole depths up to 3 times the drill diameter.
Yes. This drill is designed for cast iron drilling, helping improve wear resistance, edge stability, chip discharge, and hole consistency under suitable machining conditions.
It is suitable for grey cast iron, ductile iron, nodular cast iron, compacted graphite iron, and other cast iron components under suitable drilling conditions.
Cast iron is abrasive and often produces powdery chips. A suitable carbide drill needs strong edge stability, wear-resistant coating, and reliable flute design to maintain tool life and hole quality.
Cast iron is often machined under dry or external coolant conditions depending on the application. Internal coolant and external coolant versions are also available according to machine conditions and hole requirements.
Yes. We support customization based on drawings, cast iron grade, hole depth, coolant method, coating requirement, and drilling application.
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