Drill bit Abraboro HSS conical for metal 15.5 mm AB44515500

Abraboro conical HSS drill bit for metal, 15.5 mm diameter, is engineered for progressive hole enlargement and deburring in metalworking. Manufactured from high-speed steel (HSS), the conical geometry provides controlled cutting action suitable for use in hand-held drills and drill presses. The tool is intended for creating or enlarging holes in steel and a range of ferrous and non-ferrous metals where a tapered hole or careful ream-and-debur finish is required.

Advantages

The high-speed steel construction ensures consistent hardness and wear resistance for metal drilling operations. The conical profile enables gradual material removal, reducing the risk of snagging and providing smoother hole edges. Compatible with standard drill chucks, this bit offers versatile application in both manual and machine drilling setups while minimizing the need for multiple step drills or separate deburring tools.

Suitable for

• Enlarging existing holes in steel and non-ferrous metals
• Deburring and chamfering edges after drilling
• Progressive tapered drilling in sheet metal and plate
• Use with hand drills and drill presses for workshop or on-site metalwork

Key specifications

• Diameter: 15.5 mm
• Material: High-speed steel (HSS)
• Geometry: Conical / tapered profile for progressive cutting
• Intended materials: Steel and various ferrous and non-ferrous metals
• Suitable mounting: Standard drill chuck compatible

How to use

Secure the conical HSS bit firmly in the drill chuck, ensuring correct axial alignment. Select an appropriate drill speed for the workpiece material—moderate speeds for steel and higher speeds for softer non-ferrous metals. Begin drilling with light pressure to allow the conical tip to engage and progressively enlarge the hole; apply steady, even feed to avoid excessive heat build-up. Use cutting fluid when working with steel to extend bit life and improve chip evacuation. For deburring, pass the tapered section gently along the hole edge until the desired finish is achieved.

Usage recommendations

For best results, match drill speed and cutting fluid to the workpiece material, clamp the work securely, and avoid lateral forces on the bit. Replace the bit when wear visibly affects cutting performance or when excessive vibration occurs to maintain hole quality and operator safety.