Drill bit Abraboro HSS conical 26 mm, model AB44526000

The Abraboro HSS conical drill bit 26 mm (model AB44526000) is a specialist cutting tool designed for metalworking tasks that require tapered or enlarged holes. Manufactured from high-speed steel (HSS), the bit combines hardness and heat resistance to sustain cutting performance when used in hand drills or drill presses. Its conical geometry allows controlled material removal for deburring, chamfering and producing tapered profiles in steel and other metals.

Advantages

Made from HSS, the drill bit provides wear resistance and thermal stability during moderate to intensive drilling operations. The conical shape offers gradual cutting action, reducing the risk of snagging and enabling precise enlargement of existing holes. The single-piece design ensures consistent alignment and stability when mounted in a chuck, and the ground cutting edges deliver smooth chip evacuation and reliable deburring results.

Suitable for

• Enlarging and tapering existing holes in steel, cast iron and non-ferrous metals
• Deburring and chamfering metal edges after drilling or machining
• Fabrication and repair work in workshops and maintenance departments
• Use with portable drills and stationary drill presses

Key specifications

• Cutting material: High-speed steel (HSS)
• Tip shape: Conical/tapered geometry for progressive enlargement
• Cutting diameter: 26 mm
• Primary applications: Enlarging, deburring, chamfering and creating tapered holes
• Compatibility: Designed for use in hand-held drills and drill presses

How to use

Secure the workpiece firmly in a vise or clamping system to prevent movement. Fit the conical HSS bit into the drill chuck and tighten securely. Select a suitable spindle speed for the workpiece material—lower speeds for harder metals and higher speeds for softer alloys—apply steady feed pressure and allow the bit to cut without excessive force. Retract periodically to clear chips and reduce heat buildup. After finishing, deburr edges as needed to achieve the required surface quality.

Usage recommendations

Use cutting fluid or lubricant when working with steel to prolong tool life and improve surface finish. Start with a pilot hole when enlarging existing openings to center the conical bit more easily. Inspect the bit for wear or damage before use and replace if cutting performance deteriorates.