Kierrep pora KWB 258615

Spiral cutting drill bit KWB 258615 is an HSS M2 right-hand spiral drill designed for efficient drilling in stainless steels and a wide range of other materials. The bit has a cylindrical shank, a 130° point angle with a special polished section and a polished spiral with "Quick Cut" geometry for producing small swarf. Its reinforced core, strengthened spiral shoulder and specially shaped short spiral notch make it extra robust and highly heat-resistant, enabling reliable cutting performance when used with cordless or corded drilling machines.

Advantages

The KWB 258615 offers high wear resistance from HSS M2 material and improved chip evacuation thanks to the polished "Quick Cut" spiral. The reinforced core and strengthened spiral shoulder increase rigidity and reduce breakage risk. A 130° point angle with a polished tip improves centring and reduces walking, while the bit's heat resistance supports continuous use in demanding materials such as stainless steel, carbon steel and cast iron.

Suitable for

Key specifications

How to use

Secure the cylindrical shank in the drill chuck and ensure the workpiece is clamped. Select an appropriate drilling speed for the material and apply steady, moderate pressure. Use cutting fluid or coolant when drilling stainless steel and other hard metals to extend tool life and improve chip evacuation. Withdraw the drill periodically to clear chips if necessary.

Recommendations

For best results when drilling stainless steel, use lower speeds and a suitable cutting fluid. Avoid excessive feed rates to reduce heat build-up and risk of chipping. Inspect the drill regularly for wear and replace when geometry is compromised.