Carbide Drill For Blind Hole
For demanding machining applications requiring high-precision internal features, a specialized tool is non-negotiable. When the task involves creating a blind hole—a hole that does not pass completely through the workpiece—standard drills often fall short. Our carbide drills for blind holes are engineered specifically for this challenge. Unlike general-purpose tools, they are designed to achieve consistent depth, excellent chip evacuation in confined spaces, and superior hole quality at the bottom. This precision is critical in industries like aerospace, automotive, and mold making, where component integrity is paramount. For operations requiring different flute geometries or through-holes, we offer a comprehensive range of solutions, including our high-performance Carbide Drill With Twist Flute for versatile material removal, the specialized Carbide Drill With Straight Flute for brittle materials, the robust Carbide Drill For Deep Hole applications, and the efficient Carbide Drill For Through Hole machining. The correct drill selection directly impacts productivity, tool life, and final part quality.
The core advantage of our Carbide Drill For Blind Hole lies in its optimized geometry and premium substrate. The drill point is precisely ground to minimize walking and ensure rapid, stable penetration. The flute design is critical; it manages chip flow efficiently, preventing recutting and packing at the hole's bottom, which can lead to tool breakage or poor surface finish. Coated with advanced, multi-layer PVD coatings, our carbide drills exhibit exceptional wear resistance and reduced friction, allowing for higher feed rates and speeds compared to uncoated or HSS tools. This translates to shorter cycle times and lower cost per hole. Built from micro-grain carbide, the tool body provides the necessary rigidity to withstand the cutting forces involved in blind hole drilling without deflection, ensuring dimensional accuracy and straightness.
Key Specifications & Parameters
- Material: Premium Micro-Grain Carbide Substrate
- Coating: Advanced TiAlN PVD Coating (Standard)
- Point Angle: 140° (Optimized for Blind Holes)
- Helix Angle: 30° (For Balanced Chip Evacuation)
- Shank Tolerance: h6 for Maximum Holder Grip
- Coolant Application: Through-Tool Coolant Channels (Internal Cooling)
| Diameter Range (mm) | Effective Cutting Length (mm) | Overall Length (mm) | Recommended Depth/Diameter Ratio | Typical Workpiece Materials |
|---|---|---|---|---|
| 3.0 - 6.0 | 12 - 30 | 50 - 75 | Up to 5xD | Alloy Steels, Stainless Steel (304, 316) |
| 6.1 - 10.0 | 30 - 50 | 75 - 100 | Up to 5xD | Tool Steels (D2, H13), Cast Iron |
| 10.1 - 16.0 | 50 - 80 | 100 - 125 | Up to 5xD | Pre-Hardened Steels, Inconel, Titanium Alloys |
| 16.1 - 20.0 | 80 - 100 | 125 - 150 | Up to 5xD | High-Temperature Alloys, Duplex Stainless Steels |
Operating Parameters & Feeds/Speeds Guide
| Material Group | Hardness (HB) | Cutting Speed Vc (m/min) | Feed per Tooth fz (mm) | Coolant Type |
|---|---|---|---|---|
| Low-Carbon Steels | 120 - 200 | 80 - 120 | 0.08 - 0.15 | Emulsion or Oil |
| Alloy & Tool Steels | 200 - 300 | 60 - 90 | 0.05 - 0.12 | High-Pressure Oil |
| Stainless Steels (Austenitic) | 150 - 250 | 50 - 80 | 0.04 - 0.10 | Emulsion |
| Cast Iron (Gray/Ductile) | 180 - 260 | 70 - 100 | 0.10 - 0.18 | Dry or Minimal Air/Oil Mist |
| Nickel-Based Alloys | 250 - 350 | 20 - 40 | 0.03 - 0.08 | High-Pressure Oil |
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