Drill bit Abraboro HSS tapered 29.5 mm AB44529500

Tapered HSS drill bit Abraboro with a 29.5 mm diameter is intended for drilling, enlarging and deburring holes in steel and other ferrous metals. The tool is made from high-speed steel (HSS) to provide wear resistance and maintain cutting geometry under workshop and industrial operating conditions. Its tapered profile makes it suitable for creating stepped holes, countersinks and for gradual diameter enlargement when accuracy and surface quality are required.

Advantages

The Abraboro HSS tapered drill bit combines hardness and toughness typical of high-speed steel, ensuring consistent cutting performance and resistance to heat buildup during intermittent drilling work. The tapered design reduces axial thrust and allows controlled material removal when enlarging or reaming existing holes. The solid construction and precision ground flutes produce predictable chip evacuation and reduce the risk of clogging during metalworking.

Suitable for

• Drilling tapered or stepped holes in mild and carbon steels
• Enlarging or reaming existing holes to a larger diameter
• Countersinking and deburring metal workpieces
• Workshop and industrial machine-tool applications using drill presses or lathes with drilling attachments

Key specifications

• Material: High-speed steel (HSS)
• Nominal diameter: 29.5 mm (tapered profile)
• Geometry: Tapered/stepped cutting profile for gradual enlargement
• Intended workpiece: Steel and other ferrous metals
• Primary uses: Drilling, hole enlargement, countersinking, deburring

How to use

Secure the workpiece firmly in a vice or fixture to prevent movement. Select an appropriate drilling machine or lathe setup capable of handling the 29.5 mm tapered drill bit and ensure correct alignment with the intended hole axis. Use cutting fluid or coolant suitable for machining steel to reduce friction and heat. Begin drilling at low to moderate spindle speeds and apply steady axial pressure; the tapered profile will remove material progressively. Avoid excessive feed rates that may overload the tool. When enlarging an existing hole, progressively increase engagement and verify diameter periodically with gauges or calipers.

Usage recommendations

For best results on steel, use suitable cutting fluid, moderate speeds, and steady feed. Inspect the drill bit for wear before use and replace if cutting edges are chipped or excessively worn to maintain hole quality and operator safety.