Drill bit Abraboro HSS conical 18.5 mm AB44518500 for metal

The Abraboro HSS conical drill bit AB44518500 with an 18.5 mm diameter is designed for drilling and enlarging holes in metal. Manufactured from high-speed steel (HSS), this conical bit is suitable for use in handheld drills and drill presses and is intended for workshop and maintenance tasks involving ferrous and non-ferrous metals.

Advantages

The HSS material provides good hardness and wear resistance for general metalworking. The conical (step) geometry allows gradual enlargement of holes and reduces the need for multiple separate bits. Its design supports use in both portable drills and fixed drill presses, offering flexibility for on-site repairs and workshop machining. The single-piece construction ensures stable drilling performance and consistent hole quality when used at recommended speeds and with proper lubrication.

Suitable for

• Drilling and enlarging holes in steel and cast iron
• Work on non-ferrous metals such as aluminium and brass
• Maintenance, repair and fabrication tasks in workshops
• On-site metalwork with handheld drills

Key specifications

• Material: High-speed steel (HSS)
• Tip shape: Conical / step drill bit
• Nominal cutting diameter: 18.5 mm
• Intended use: Metal drilling and hole enlargement
• Compatibility: Handheld electric drills and drill presses

How to use

Secure the workpiece and select appropriate clamping to prevent movement. Fit the conical HSS bit into the drill chuck and tighten securely. Start drilling at low to medium speed, increasing gradually while applying steady axial pressure. For best results in thicker or harder metals, use cutting fluid or lubricant to reduce heat and extend tool life. After completing the hole, withdraw the bit while the drill is running briefly to clear chips, then stop and inspect the hole for required dimensions and finish.

Usage recommendations

Use correct drill speeds and adequate lubrication for the specific metal being worked to minimise wear and avoid overheating. For precision holes or repeated production runs, consider pilot drilling and finishing with a dedicated reamer or end mill if tight tolerances are required.