Designed for stable deep-hole drilling in cast iron materials, this 12xD carbide drill combines imported MG grade 0.8 μm carbide, ALTISIXN wear-resistant coating, optimized point geometry, reinforced deep-hole flute structure, and reliable chip discharge support to improve abrasive wear resistance, reduce edge chipping, maintain hole straightness, and deliver consistent drilling performance in long-depth cast iron machining.
The 12xD carbide drill for cast iron is designed for deep-hole machining applications where abrasive wear resistance, powdery chip discharge, hole straightness, and edge stability are critical. Compared with 5xD or 8xD drilling, 12xD cast iron drilling requires a longer chip discharge path and places higher demands on flute rigidity, edge protection, drilling guidance, and process stability.
Cast iron materials such as grey cast iron, ductile iron, nodular cast iron, and compacted graphite iron are abrasive during drilling. Powdery chips, graphite particles, hard casting skin, and uneven cast surfaces may accelerate cutting edge wear or cause micro-chipping. In 12xD deep-hole drilling, poor chip discharge can increase friction inside the hole, affect hole quality, and shorten tool life.
This 12xD carbide drill is manufactured from imported MG grade 0.8 μm tungsten carbide rods with 10% cobalt content, supporting stable tool strength and wear resistance. Combined with ALTISIXN wear-resistant coating, optimized point geometry, reinforced deep-hole flute structure, controlled edge preparation, and German Walter precision grinding, it helps improve edge protection, chip discharge, and reliable hole consistency in deep cast iron drilling applications.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 12xD Carbide Drill for Cast Iron | Drill Type | Solid Carbide Deep-Hole Drill |
| Hole Depth | 12xD | Application | Deep-hole drilling in cast iron materials |
| 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% | Coating | ALTISIXN Wear-Resistant Coating |
| Passivation Control | ±0.003 mm | Edge Inspection |
|
| Service | Regrinding and Customization Available | Tool Life | Up to 80–150 Meters Under Suitable Machining Conditions |
| Drill Diameter (mm) | Flute Length (mm) | Shank Diameter (mm) | Overall Length (mm) | Hole Depth | Coolant Type | Availability |
|---|---|---|---|---|---|---|
| D3.10-D4.00 | 54 | 4 | 92 | 12xD | Internal / External | Standard |
| D4.10-D4.70 | 64 | 6 | 102 | 12xD | Internal / External | Standard |
| D4.80-D6.00 | 83 | 6 | 121 | 12xD | Internal / External | Standard |
| D6.10-D8.00 | 110 | 8 | 148 | 12xD | Internal / External | Standard |
| D8.10-D10.0 | 138 | 10 | 180 | 12xD | Internal / External | Standard |
| D10.1-D12.0 | 158 | 12 | 206 | 12xD | Internal / External | Standard |
| D12.1-D14.0 | 182 | 14 | 230 | 12xD | Internal / External | Standard |
| D14.0-D16.0 | 208 | 16 | 260 | 12xD | Internal / External | Standard |
| D16.1-D18.0 | 234 | 18 | 285 | 12xD | Internal / External | Standard |
| D18.1-D20.0 | 258 | 20 | 310 | 12xD | Internal / External | Standard |
Key Features
Made from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content.
The fine carbide grain structure helps support tool rigidity, edge strength, and stable wear resistance in deep cast iron hole machining.
ALTISIXN coating helps protect the cutting edge against abrasive wear in cast iron drilling.
It supports stable cutting performance, reduces premature edge wear, and helps improve tool life in 12xD deep-hole applications.
Optimized drill point geometry supports stable entry and accurate hole positioning.
A stable drill point helps reduce drill walking, improves starting accuracy, and supports better hole straightness during deep drilling.
Reinforced flute geometry improves powdery chip discharge and tool rigidity in 12xD cast iron drilling.
The variable core design and back taper help reduce friction, protect the cutting edge, and maintain stable hole quality over longer drilling depths.
This 12xD carbide drill for cast iron is suitable for deep-hole machining in CNC machining centers and production drilling applications. It is especially useful for cast iron components where abrasive wear resistance, powdery chip discharge, edge protection, hole straightness, and batch stability 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
12xD means the drill is designed for hole depths up to 12 times the drill diameter. It is used for deeper hole machining where chip evacuation, tool rigidity, coolant delivery, and hole straightness are more demanding.
Yes. This 12xD carbide drill is suitable for grey cast iron, ductile iron, nodular cast iron, compacted graphite iron, and other cast iron materials under suitable machining conditions.
This drill uses ALTISIXN wear-resistant coating, which helps improve abrasive wear resistance, edge protection, and tool life in cast iron deep-hole drilling applications.
Cast iron is abrasive and produces powdery chips. In 12xD deep-hole drilling, chips travel a longer distance, and abrasive particles may increase tool wear or friction inside the hole, so chip discharge and edge protection are critical.
An 8xD drill is used for deep-hole drilling, while a 12xD drill is designed for even deeper holes with longer chip discharge distance. 12xD drilling requires better flute rigidity, more stable chip removal, careful runout control, and stronger edge protection.
Yes. We support customization based on drawings, cast iron grade, diameter, hole depth, chip removal method, ALTISIXN coating requirement, shank size, and drilling application.
Internal coolant or air-blast support is recommended according to the cast iron grade, machine condition, and chip removal requirement. For 12xD holes, stable chip discharge is important to maintain hole quality and tool life.
Yes. Regrinding service is available depending on drill size, wear condition, and application requirements.
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