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| Categories | Carbide Drill |
|---|---|
| Type: | Drill |
| Application: | Metal drilling |
| Coating: | Titanium, Tin, or Cobalt |
| Suitable For: | High-speed drilling |
| Flute Type: | Spiral |
| Cutting Direction: | Right hand |
| Usage: | Handheld or machine |
| Shank Type: | Straight |
| Material: | Carbide |
| Size: | Various sizes available |
| Features: | High hardness, wear resistance, heat resistance |
| Manufacturer: | Various brands available |
| Company Info. |
| Zhuzhou Delong Metal Materials Processing Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
Product description
The 5D Ultra-Hard Internal Cooling Tungsten Carbide Drill Bit (Size Range: 8.1–10.0mm, D10 Shank, 61mm flute length, 103mm overall length) is specially engineered for high-performance, high-efficiency deep-hole drilling in tough materials. Featuring a 60° center outlet and unique "fried dough twists" spiral flute geometry, this drill ensures fast chip evacuation, excellent centering, and minimal tool wear even in demanding conditions.
Crafted from ultra-fine grain tungsten carbide and enhanced with internal coolant channels, this drill delivers superior hardness, thermal resistance, and prolonged cutting life — ideal for automated CNC machining centers and precision metal drilling applications.
Ultra-Hard Tungsten Carbide: Offers exceptional hardness and wear resistance for long tool life.
Internal Coolant Design: Dual internal channels for efficient cooling, reducing heat buildup and tool wear.
Fried Dough Twists Helix Flute: Innovative twisted flute design enhances chip evacuation and minimizes clogging.
60° Center Outlet Tip: Promotes accurate centering and reduced deflection in deep-hole drilling.
5D Depth Ratio: Capable of drilling to 5 times the diameter, ideal for deeper hole applications.
Precision Ground Shank (D10): Ensures optimal alignment and vibration reduction during high-speed operation.
| Parameter | Value |
|---|---|
| Drill Diameter | 8.1–10.0 mm |
| Shank Diameter | D10 |
| Flute Length | 61 mm |
| Overall Length | 103 mm |
| Drilling Depth | 5D (5× diameter) |
| Tip Geometry | 60° Center Outlet |
| Flute Type | Twisted Helix (“Fried Dough Twists” Style) |
| Material | Ultra-Hard Tungsten Carbide |
| Coolant | Internal Cooling Channels |
| Application | Deep hole drilling in hard and stainless steels, cast iron, alloys |
Automotive Industry: Precision drilling of hardened steel components and engine blocks.
Mold & Die Manufacturing: High-accuracy hole making in alloyed tool steels.
Aerospace Components: Drilling structural parts with strict tolerance requirements.
CNC Machining Centers: Continuous, automated high-speed drilling with reliable tool life.
General Engineering: Deep-hole drilling in stainless steel, carbon steel, and composite alloys.
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