Drill bit FANAR WIERTLO WDG FI 2.50 mm 3-flute VHM TiAlN

The FANAR WIERTLO WDG FI solid carbide drill bit with TiAlN coating and 3-flute geometry, diameter 2.50 mm, is engineered for precision drilling in a range of metals and engineering materials. Its VHM (solid carbide) construction provides high stiffness and consistent concentricity, while the TiAlN surface layer increases heat and wear resistance. The three-flute design improves chip evacuation and enables stable penetration during high-speed or CNC drilling operations where tight dimensional tolerances and good surface finish are required.

Advantages

The combination of VHM substrate and TiAlN coating delivers enhanced tool life under elevated cutting temperatures and abrasive conditions. The 3-flute geometry reduces vibration and supports improved hole straightness and roundness in small-diameter drilling. The tool's construction promotes repeatable results across batches and helps maintain edge stability during prolonged cycles, reducing the frequency of tool changes.

Suitable for

• Precision drilling in hardened steels, stainless steels and general engineering alloys
• CNC machining centers and high-speed drilling applications
• Prototype and small-batch production where hole quality and tool life are important
• Manual drilling operations with rigid setups to minimize runout

Key specifications

• Material: solid carbide (VHM)
• Coating: titanium aluminum nitride (TiAlN)
• Diameter: 2.50 mm
• Flute geometry: 3 flutes for improved chip control
• Intended use: metalworking and engineering materials

How to use

Secure the drill bit in a properly rated collet or chuck ensuring minimal runout. Select spindle speeds and feed rates according to the workpiece material and machine capability; higher speeds are suitable when using the TiAlN coating for heat-resistant performance. Use steady pecking cycles or through-hole pecking when drilling deep holes to clear chips and avoid clogging the 3-flute flutes. Apply appropriate cutting fluid or coolant when machining stainless steels or abrasive alloys to extend tool life and improve surface finish.

Usage recommendations

Inspect the tool regularly for wear on the cutting edges and coating degradation. Replace the bit if chipping or loss of diameter tolerance is observed. For best results, pair the drill with rigid toolholding, balanced spindles, and consistent coolant delivery.