Solid Carbide Twist Drill FANAR X-DRILL DIN 6537 5.20 mm 3xD HA6 VHM AT

Solid carbide twist drill FANAR X-DRILL DIN 6537 with a 5.20 mm diameter and a 3xD geometry (overall/working length 66/28 mm) is a precision tool for metalworking. Manufactured from solid carbide (VHM) and finished with an AT coating, this drill is produced to HA6 tolerance and conforms to DIN 6537 dimensions. It is intended for stable, repeatable drilling operations where accuracy, stiffness and wear resistance are required for through and blind holes.

Advantages

The FANAR X-DRILL combines the hardness and stiffness of solid carbide with a wear-resistant AT coating to extend tool life in high-speed and interrupted cutting. The DIN 6537 shank and 3xD flute length provide good rigidity and concentricity, reducing runout and deflection. HA6 tolerance on the diameter ensures consistent hole size and interchangeability in production environments. The twist geometry and chip evacuation are optimized for a range of ferrous and non-ferrous metals.

Suitable for

• Precision drilling of steels, cast irons and non-ferrous metals
• Production drilling on CNC machining centres and turret machines
• Toolroom and prototype work requiring tight diameter tolerance
• Through holes and blind holes up to three times the diameter (3xD)

When it may not be suitable

This solid carbide drill is not designed for deep-hole drilling beyond the 3xD flute length; for deeper applications, specialized long-reach drills or peck drilling cycles are preferable. It may also be less suitable for highly abrasive materials or non-metallic composites that require specially formulated coatings or geometries.

Key specifications

• Material: solid carbide (VHM)
• Diameter: 5.20 mm
• Overall length / cutting length: 66 mm / 28 mm
• Length ratio: 3xD
• Tolerance: HA6
• Coating: AT
• Standard: DIN 6537

How to use

Secure the FANAR X-DRILL in an appropriate DIN 6537-compatible chuck or collet with correct clamping length to maintain concentricity. Select spindle speeds and feed rates suitable for the workpiece material and the 5.20 mm diameter—use manufacturer cutting data for carbide tools where available. For through holes, standard pecking may not be necessary; for blind holes, clear chips regularly to avoid chip packing. Use cutting fluid or coolant as recommended for the material to improve tool life and surface finish. Inspect holes for correct diameter and surface quality and replace the drill when wear or chipping affects performance.

What to consider before purchase

• Confirm the 5.20 mm diameter and 3xD length meet the required hole depth and tolerance needs
• Ensure machine spindle speed and rigidity are suitable for solid carbide tooling
• Verify compatibility with intended workpiece materials and recommended coolant/cutting parameters
• Check that a DIN 6537 shank fits your toolholder or collet system

Usage recommendations

For best results, run the drill at recommended carbide speeds with steady feed, use appropriate coolant, and monitor tool wear. When machining harder steels, reduce speed and increase feed moderately; for non-ferrous materials, increase speed and maintain positive feed to avoid rubbing. Replace the drill at the first signs of flank wear or chipping to preserve hole accuracy.