Designed for stable extra-deep-hole drilling in steel materials, this 15xD carbide drill combines imported MG grade 0.8 μm carbide, ALTISIXN wear-resistant coating, optimized point geometry, reinforced deep-hole flute structure, and internal coolant support to improve chip evacuation, hole straightness, wear resistance, and process stability in long-depth steel hole machining.
The 15xD carbide drill for steel is designed for extra-deep-hole machining applications where chip evacuation, hole straightness, coolant delivery, and drilling stability are critical. Compared with 12xD drilling, 15xD steel drilling has a longer chip evacuation distance and higher requirements for flute rigidity, internal coolant pressure, spindle runout control, and machine stability.
Steel materials such as carbon steel, alloy steel, structural steel, pre-hardened steel, and bearing steel can generate continuous chips and cutting heat during deep-hole drilling. In 15xD applications, chips must travel a longer path before leaving the hole. If chip evacuation is unstable, cutting resistance may increase, hole straightness may be affected, and tool wear or breakage risk may rise.
This 15xD carbide drill is manufactured from imported MG grade 0.8 μm tungsten carbide rods with 10% cobalt content, supporting high-speed cutting and stable tool strength. Combined with ALTISIXN wear-resistant coating, optimized point geometry, reinforced deep-hole flute structure, controlled edge preparation, and German Walter precision grinding, it helps maintain reliable drilling stability, reduce wear, and improve hole consistency in extra-deep steel drilling applications.
| Item | Description | Item | Description |
|---|---|---|---|
| Product Name | 15xD Carbide Drill for Steel | Drill Type | Solid Carbide Extra-Deep-Hole Drill |
| Hole Depth | 15xD | Application | Extra-deep-hole drilling in steel materials |
| Workpiece Material | Carbon steel, alloy steel, structural steel, pre-hardened steel, bearing steel | 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 support tool rigidity, edge strength, and stable cutting performance in extra-deep steel hole machining.
ALTISIXN coating helps improve wear resistance, heat resistance, and cutting edge protection during steel drilling.
It supports stable cutting performance, reduces premature edge wear, and helps extend tool life in 15xD extra-deep-hole applications.
Optimized drill point geometry supports stable entry and accurate hole positioning.
A stable drill point helps reduce drill walking, improve starting accuracy, and support better hole straightness before long-depth drilling.
Reinforced flute geometry improves chip evacuation and tool rigidity in 15xD drilling.
The variable core design and back taper help reduce chip clogging, lower friction inside the hole, protect the cutting edge, and maintain more stable hole quality over longer drilling depths.
This 15xD carbide drill for steel is suitable for extra-deep-hole machining in CNC machining centers and production drilling applications. It is especially useful for steel components where long chip evacuation, internal coolant delivery, hole straightness, wear resistance, and batch drilling 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
15xD means the drill is designed for hole depths up to 15 times the drill diameter. It is used for extra-deep-hole machining where chip evacuation, coolant delivery, tool rigidity, and hole straightness are more demanding.
Yes. This 15xD carbide drill is suitable for carbon steel, alloy steel, structural steel, pre-hardened steel, bearing steel, and other steel materials under suitable machining conditions.
This drill uses ALTISIXN wear-resistant coating, which helps improve edge protection, heat resistance, and tool life in steel extra-deep-hole drilling applications.
A 12xD drill is used for deep-hole drilling, while a 15xD drill is designed for longer and more demanding holes. 15xD drilling requires stronger coolant support, better flute rigidity, more careful runout control, and more stable machine conditions.
Yes. Internal coolant is strongly recommended for 15xD steel drilling because it helps remove chips, control cutting heat, reduce chip clogging, and maintain stable hole quality in extra-deep holes.
For better starting stability and hole accuracy, a pilot hole or guide hole is recommended in many 15xD drilling applications. The actual process should be confirmed according to drill diameter, machine condition, workpiece material, and tolerance requirement.
Machine rigidity, spindle runout, tool holding accuracy, coolant pressure, pilot hole quality, and chip evacuation conditions should be checked before drilling. These factors strongly affect hole straightness and tool life in 15xD applications.
Yes. We support customization based on drawings, steel grade, diameter, hole depth, coolant method, ALTISIXN coating requirement, shank size, and drilling application.
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