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.
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.