HSSTiAlN step drill series 309 Evomaxx

The HSS-G step drill with TiAlN coating, spiral flutes and Step Tip point is a premium high-performance tool designed for maximum precision, cutting efficiency and durability in intensive work on sheet metal.

Made of HSS-G high-speed steel and coated with TiAlN (titanium aluminium nitride), it offers greater heat and wear resistance than uncoated versions. Its stepped conical geometry allows multiple diameters to be drilled with a single tool. The helical flutes improve chip evacuation and cutting smoothness, while the Step Tip point favours stable centring and controlled, progressive penetration. It is aimed at professional applications requiring high productivity and a long service life.

Technical specifications:

• TiAlN (titanium aluminium nitride) coating.
• Step Tip geometry for fast, precise and efficient drilling.
• Accurate centring and stable cutting start.
• CBN-ground with spiral chip-evacuation flutes.
• Smooth cutting with less noise, vibration and burr formation.
• Radially adjusted, CBN-ground steps.
• Laser-marked steps for controlled drilling.
• Suitable for sheet metal up to 4 mm thick.
• Cutting angle 118°.
• Cone angle 90°.
• Right-hand cutting.
• 3-flat shank.
• Range: Evomaxx.

Recommended applications:

• Main: steel, stainless steel, nickel silver, PVC, plexiglass.
• Secondary: cast iron, bronze.