Kierrep pora KWB 238642

The KWB 238642 twist drill bit is a precision-ground, right-hand cutting drill designed for reliable, accurate drilling. Finished with titanium nitride (gold colour) for reduced friction and extended life, it features a 135° tip angle and cross-ground geometry to DIN 1412 C for self-centring performance. Supplied in a blister pack, this single cylindrical industrial-quality drill bit is suitable for drilling a wide range of materials.

Advantages

Precision ground to DIN 338 Type N with a 135° tip and cross-ground configuration provides accurate, self-centring starts. The titanium nitride surface treatment lowers friction and improves wear resistance, extending tool life under high loads. The cylindrical shank and industrial-quality manufacturing ensure consistent performance and compatibility with standard drill chucks.

Suitable for

Key specifications

How to use

Clamp the cylindrical shank securely in an appropriate drill chuck. Use right-hand rotation and apply steady feed pressure; the 135° tip and cross-ground geometry assist in self-centring and reduce walking at the start. Select appropriate spindle speed and cutting fluid for the material being drilled to optimise cutting performance and tool life.

Recommendations

For best results, match drill speed and coolant to the workpiece material: lower speeds and cutting fluid for hard or alloyed steels, higher speeds for non-ferrous metals and plastics. Replace the bit if signs of wear or reduced accuracy appear to avoid damage to the workpiece.