Drill bit Proline HSS cylindrical 15.5 mm for metal, model 76155

Proline HSS cylindrical 15.5 mm drill bit model 76155 is designed for drilling metal. Manufactured from high-speed steel (HSS), this drill bit balances hardness and toughness to provide consistent cutting performance in steel and non-ferrous metals. The straight cylindrical shank is compatible with standard chucks on hand drills and drill presses, making it suitable for workshop maintenance, fabrication tasks and general mechanical work.

Advantages

The HSS material offers good wear resistance and heat tolerance during intermittent drilling, helping to maintain cutting edge geometry. The cylindrical shank ensures secure clamping in most standard drill chucks without requiring an adapter. Its 15.5 mm diameter provides a mid-range hole size useful for a variety of metalwork applications, enabling precise hole-making with appropriate drilling speed and lubrication.

Suitable for

• Drilling mild and medium-hard steels
• Holes in non-ferrous metals such as aluminum and brass
• Maintenance and repair tasks in workshops
• Fabrication work on metal components
• Use with hand drills and drill presses

Key specifications

• Material: High-speed steel (HSS)
• Shank type: Cylindrical straight shank for standard chucks
• Drill diameter: 15.5 mm
• Intended use: Metal cutting (steel and non-ferrous metals)
• Suitable equipment: Hand drills and bench drill presses

How to use

Secure the drill bit in the chuck ensuring proper alignment and tight clamping. Select an appropriate drill speed for the material being worked—slower speeds for harder steels and higher speeds for softer non-ferrous metals. Apply cutting fluid or lubricant when drilling steel to reduce heat and prolong tool life. Drill with steady feed pressure, withdraw periodically to clear chips, and keep the workpiece clamped to prevent movement.

Usage recommendations

For best results, match drilling speed and lubrication to the metal type, maintain correct chip evacuation, and inspect the cutting edge for wear. Replace the bit once accuracy or cutting performance degrades to avoid damage to the workpiece.