Drill bit Abraboro HSS conical for metal 25 mm AB44525000

Abraboro conical HSS drill bit for metal, 25 mm diameter, is a single cutting tool designed for progressive hole enlargement and chamfering in steel and other metallic materials. Manufactured from high-speed steel (HSS), the conical geometry provides controlled material removal from pilot holes to the final 25 mm diameter while maintaining edge hardness and wear resistance appropriate for general metalworking tasks. The tool is compatible with drill presses and handheld electric drills when secure clamping and appropriate speeds are used.

Advantages

The HSS material offers heat resistance and toughness for cutting a wide range of ferrous and non-ferrous metals. The conical shape allows gradual enlargement of holes and simultaneous deburring or chamfering, reducing the need for multiple tools. The single-piece construction ensures consistent concentricity and ease of handling during set-up. Designed for straightforward use in workshop and on-site applications, the bit delivers predictable chip evacuation and reliable service when used within recommended speed and feed ranges.

Suitable for

• Enlarging and chamfering holes in steel and non-ferrous metals
• Workshop drilling with drill press or pillar drill
• Handheld drilling where controlled progressive cutting is required
• Maintenance, fabrication, and metal repair tasks

Key specifications

• Diameter: 25 mm (conical cutting diameter)
• Material: High-speed steel (HSS)
• Geometry: Conical/step profile for progressive hole enlargement and chamfering
• Intended use: Cutting and drilling metallic materials
• Compatibility: Suitable for drill presses and handheld drills with appropriate chucks

How to use

Start from a correctly positioned pilot hole or center punch to ensure accurate entry. Secure the workpiece and select a drill speed appropriate for the metal being worked; lower speeds are recommended for harder steels and larger diameters. Apply steady, moderate feed pressure to allow the conical flutes to cut progressively; avoid excessive force that could overheat the HSS material. Use cutting fluid or coolant when drilling ferrous metals to reduce heat and improve tool life. After reaching the desired size, withdraw the bit while the spindle is still turning to clear chips, then stop the machine before inspection.

Usage recommendations

For best results, pair the 25 mm conical HSS bit with a stable drill press when accuracy and repeatability are required. Use appropriate cutting fluid for steel and monitor bit condition—resurface or replace if dulling or chipping is observed. When using handheld drills, ensure firm clamping and controlled feed to maintain concentricity and reduce vibration.