Designed for demanding extra-deep-hole drilling in cast iron materials, this 30xD carbide drill combines imported MG grade 0.8 μm carbide, ALTISIXN wear-resistant coating, optimized point geometry, reinforced extra-deep-hole flute structure, precision pilot-hole guidance, and application-matched chip removal support to resist abrasive wear, improve powdery chip discharge, reduce edge chipping, and maintain reliable hole straightness.
The 30xD carbide drill for cast iron is designed for highly demanding extra-deep-hole applications where abrasive wear resistance, powdery chip discharge, pilot guidance, hole straightness, flute rigidity, and process stability are critical.
Compared with 15xD or 20xD drilling, a 30xD application has a significantly longer unsupported drill body and chip discharge path. It places much higher demands on pilot hole accuracy, spindle runout, tool holder condition, machine rigidity, flute consistency, chip removal stability, and cutting parameter control.
Cast iron materials such as grey cast iron, ductile iron, nodular cast iron, and compacted graphite iron contain abrasive particles that can accelerate cutting edge and flute wear. Powdery chips, graphite particles, casting skin, hard inclusions, and variations in casting structure may also increase the risk of edge chipping and unstable cutting load.
In a 30xD hole, abrasive chips must travel through an extremely long flute path before leaving the cutting zone. Unstable chip removal may increase friction inside the hole, accelerate flute wear, damage the hole wall, affect hole straightness, or cause premature drill failure.
This carbide drill is manufactured from imported MG grade 0.8 μm tungsten carbide rods with 10% cobalt content, supporting drill rigidity and edge stability. Combined with ALTISIXN coating, reinforced flute geometry, controlled edge preparation, precision pilot guidance, Walter inspection, and German Walter 5-axis grinding, it helps maintain reliable drilling performance and consistent hole quality in extra-deep cast iron machining.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 30xD Carbide Drill for Cast Iron | Drill Type | Solid Carbide Extra-Deep-Hole Drill |
| Hole Depth | 30xD | Application | Extra-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 |
Key Features
Made from imported MG grade 0.8 μm tungsten carbide with 10% cobalt content.
The fine carbide grain structure helps provide the rigidity, edge strength, and dimensional stability required for demanding extra-deep cast iron hole drilling.
ALTISIXN coating helps protect the cutting edge and flute surfaces against abrasive particles during cast iron machining.
It supports stable cutting performance, reduces premature edge wear, and helps protect the drill throughout the extended 30xD drilling cycle.
Internal coolant or air-blast support can be selected according to the cast iron grade, chip form, machine configuration, and production conditions.
Stable removal of powdery chips and graphite particles helps reduce internal friction, flute wear, chip accumulation, and hole wall damage.
Reinforced flute geometry balances chip space and drill rigidity for long-depth cast iron machining.
The variable core design and back taper help reduce internal friction, improve powdery chip flow, protect the cutting edge, and support better hole straightness.
This 30xD carbide drill for cast iron is suitable for highly demanding extra-deep-hole machining in CNC machining centers and automated production equipment. It is intended for applications where abrasive wear resistance, long-distance powdery chip discharge, edge protection, hole straightness, dimensional consistency, and reliable batch performance 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
30xD means the drill is designed to produce a hole up to 30 times its diameter. For example, a 5 mm drill can be used for a drilling depth of approximately 150 mm under suitable machining conditions.
Yes. This 30xD carbide drill is designed for grey cast iron, ductile iron, nodular cast iron, compacted graphite iron, and other cast iron materials under suitable machining conditions.
The drill uses ALTISIXN wear-resistant coating, which helps improve abrasive wear resistance, cutting edge protection, flute protection, and drilling stability during extra-deep cast iron machining.
The chip removal method should be selected according to the cast iron grade, drill diameter, machine configuration, and chip characteristics. Internal coolant may be suitable for certain applications, while air-blast support may be preferred for others. Stable chip removal is essential for 30xD drilling.
A 30xD drill has a longer unsupported body and a significantly longer chip discharge path than a 20xD drill. It requires more accurate pilot guidance, lower spindle runout, stronger flute rigidity, better tool holding, and more stable machine conditions.
A 30xD drill has a long unsupported body before entering the guide hole. Controlled entry helps prevent drill whipping, radial loading, cutting edge damage, and premature breakage.
Cast iron contains abrasive particles and normally generates powdery chips or graphite particles. In 30xD drilling, these particles must travel through an extremely long flute path, increasing the risk of flute wear, internal friction, edge chipping, hole wall damage, and unstable hole straightness.
Yes. We support customized diameter, flute length, overall length, shank size, coolant channel, chip removal configuration, ALTISIXN coating, edge preparation, and matching pilot drills according to drawings and machining requirements.
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