Tungsten Steel Spot Drill: Precision and Performance

Tungsten Steel Spot Drills Deliver Superior Precision

Tungsten steel spot drills are ideal for initiating accurate hole locations in metalworking and CNC operations. Their exceptional hardness and resistance to wear make them a top choice when precision is critical.

These drills are not designed for deep hole drilling but are optimized to create a conical entry point, which guides subsequent drilling tools to maintain alignment and accuracy.

Key Advantages of Tungsten Steel Spot Drills

• Extreme hardness: Tungsten steel (also known as cemented carbide) offers high hardness, typically above 90 HRA.
• Heat resistance: Suitable for high-speed machining with less risk of deformation.
• Longer tool life: Maintains edge sharpness over extended use, reducing replacement frequency.
• Improved positioning: Creates a chamfer that prevents drill walking and ensures perpendicular entry.

Ideal Applications in Metalworking

Tungsten steel spot drills are widely used in CNC milling, aerospace parts production, and precision mold making. Their design focuses on creating an exact starting point, especially on tough materials like hardened steel, stainless steel, and titanium alloys.

For example, in die and mold shops, spot drills with a 90° or 120° point angle are used before twist drilling to improve tool alignment and prevent tool deflection.

Choosing the Right Spot Drill

Tips for Optimal Usage

1. Use low feed rates to avoid chipping the tool tip.
2. Choose the correct point angle based on the material (e.g., 120° for hard alloys).
3. Ensure proper coolant application to reduce heat and wear.
4. Do not use as a substitute for center drills unless specifically designed.