Broca helicoidal KWB 206620

The KWB 206620 twist drill bit is a precision-ground, right-hand cut drill designed for accurate drilling in a wide range of materials. It has a 135° tip angle and is cross-ground to DIN 1412 C for self-centering performance. The bit is cylindrical, single-piece, and finished in natural (self) colour, offering industrial quality suitable for professional and DIY use.

Advantages

This drill bit is precision ground (type N) to deliver accurate hole positioning and consistent cutting performance. The 135° tip and cross-ground geometry provide reliable self-centering and reduced walking on start-up. Made for industrial use, it is compatible with steel and alloyed steel, cast steel, die castings, sintered steel, non‑ferrous metals and hard plastics, giving broad material versatility.

Suitable for

Key specifications

How to use

Secure the workpiece and choose a suitable drill speed for the material (lower speeds for harder steels, higher speeds for non-ferrous metals and plastics). Mount the KWB 206620 bit in a compatible drill chuck ensuring it is properly tightened. Start drilling with light pressure to allow the self-centering tip to locate the hole, then apply steady feed pressure. Use appropriate cutting fluid when drilling steel or alloyed steel to reduce heat and extend bit life. Withdraw the bit periodically to clear chips when drilling deep holes.

Recommendations

For best results, match drill speed and coolant to the material: use cutting fluid and moderate speeds for steels, higher speeds and minimal coolant for non‑ferrous metals and plastics. Inspect the bit for wear before each use and replace when the tip or flutes are visibly worn to maintain hole quality and safety.