Drill bit GEKO cobalt HSS for metal 10.5 mm (G37105)

Drill bit GEKO cobalt HSS for metal 10.5 mm (G37105) is a straight-fluted twist drill made of high-speed steel with an elevated cobalt content, designed for reliable drilling in steel and other ferrous materials. With a 10.5 mm cutting diameter, this GEKO cobalt HSS drill bit offers enhanced heat resistance and improved wear stability compared with standard HSS drills, making it suitable for repeated metalworking operations with handheld and bench drills. The geometry and material composition are intended to maintain cutting performance under higher temperatures encountered during drilling of hardened or high-alloy steels.

Advantages

The cobalt-enriched HSS composition provides greater hardness at elevated temperatures and better edge retention, reducing rapid dulling during continuous use. The drill's design promotes efficient chip evacuation and stable drilling performance in typical metalworking conditions. Compatible with standard drill chucks, it is suitable for both maintenance tasks and fabrication work where consistent hole quality and tool life are important.

Suitable for

• Drilling holes in mild and alloy steels
• Metal fabrication and assembly tasks
• Maintenance and repair work with handheld or bench drills
• Pilot and through-hole drilling in ferrous materials

Key specifications

• Diameter: 10.5 mm
• Material: high-speed steel with cobalt alloy
• Intended material: steel and other ferrous metals
• Flute type: twist drill geometry for metalworking
• Compatibility: standard drill chucks, handheld and stationary drills

How to use

Secure the drill bit in the drill chuck ensuring concentric alignment and tight clamping. Select an appropriate spindle speed for the material and diameter—lower speeds for harder or heat-sensitive steels—and apply steady, moderate feed pressure to avoid overheating. Use cutting fluid or lubricant when drilling steel to improve cooling, reduce friction and extend tool life. Withdraw the bit periodically for chip clearing during deeper holes, and inspect the cutting edges after repeated use to determine when regrinding or replacement is required.

Usage recommendations

For best results when drilling steel, use a suitable cutting lubricant, maintain recommended speeds for a 10.5 mm cobalt HSS drill, and avoid excessive side loads. Store the drill bit in a dry place and inspect for wear before precision work.