Drill bit GEKO cobalt HSS for metal 11 mm (G37110)

Drill bit GEKO cobalt HSS 11 mm is a solid high-speed steel cutting tool alloyed with cobalt, designed for drilling a wide range of metals. The 11 mm diameter and robust construction provide stable cutting performance and increased resistance to heat and wear compared with standard HSS bits. This drill bit is suitable for use with hand drills and drill presses and is intended for metalworking applications where accuracy and durability are required.

Advantages

The cobalt alloy composition increases red hardness and maintains cutting edge stability at higher temperatures, reducing wear during continuous drilling of hard materials. The precision-ground flute geometry helps chip evacuation and reduces clogging, while the straight shank ensures compatibility with standard chucks. Overall design balances toughness and cutting performance for repeated use on demanding metal surfaces.

Suitable for

• Drilling stainless steel and other hardened steels
• Working with cast iron and alloyed metals
• Metal fabrication, repair and maintenance tasks
• Use in hand-held drills and drill press machines

Key specifications

• Material: high-speed steel (HSS) with cobalt alloy
• Diameter: 11 mm
• Tip/point type: precision ground for metal cutting
• Shank: straight shank compatible with standard chucks
• Intended use: metal drilling including stainless steel and cast iron

How to use

Secure the drill bit in the chuck and ensure it is centered before starting. Select an appropriate drilling speed for the material being worked: use lower speeds for hard or stainless steels and slightly higher speeds for softer metals. Apply steady pressure without forcing the bit; allow the drill to do the cutting. Use cutting fluid or coolant when drilling hard or heat-sensitive metals to extend tool life and improve hole quality. Withdraw the bit periodically to clear chips from the flutes when drilling deep holes.

Usage recommendations

For best results when drilling stainless steel or other hard alloys, use cutting fluid, maintain low to moderate spindle speeds, and avoid excessive axial force. Inspect the bit for wear and replace when the cutting edge becomes dull to prevent poor hole quality and overheating.