Drill bit Art-Pol HSS step-ground for metal 15 mm

Art-Pol HSS step-ground drill bit, 15 mm diameter, is a solid high-speed steel tool designed for drilling metal. The step-ground (podtaczane) geometry produces a precise cutting edge and controlled chip evacuation, allowing reliable holemaking in steel, cast iron and non-ferrous alloys. The bit is suitable for use in both hand-held drills and drill presses commonly used in fabrication, maintenance and repair environments.

Advantages

The HSS material provides high hardness and heat resistance at working temperatures typical for metal drilling. The step-ground point geometry reduces axial thrust and improves centring on metal surfaces, resulting in cleaner holes and extended cutting life compared with standard twist bits. Its solid one-piece construction offers stiffness and dimensional stability during repetitive drilling operations.

Suitable for

• Drilling holes in mild and alloy steels
• Creating openings in cast iron and non-ferrous metals such as aluminium and brass
• General workshop fabrication, maintenance and repair tasks
• Use with hand drills and drill presses

Key specifications

• Material: high-speed steel (HSS)
• Design: step-ground point geometry
• Diameter: 15 mm
• Intended use: metal drilling (steel, cast iron, non-ferrous alloys)
• Suitable machine types: hand-held drills and drill presses

How to use

Secure the workpiece firmly and mark the drilling position. Select an appropriate cutting speed and apply cutting fluid when drilling ferrous metals to reduce heat and improve tool life. Start at low speed to establish the hole and increase speed as needed while maintaining steady axial feed pressure. Withdraw the bit periodically to clear chips from deep holes and avoid excessive heat build-up. Inspect the drill tip for wear and recondition or replace when cutting performance declines.

Usage recommendations

For best results, use suitable coolant or cutting oil when drilling steel and other ferrous materials, and match spindle speed to material hardness and drill diameter. Avoid excessive feed force to prevent chipping of the step-ground point.