Poranteräsarja KWB 429844 13 kpl koot 1,5-6,5

The KWB 429844 drill bit set contains 13 precision-ground, titanium-nitrided bits in sizes 1.5–6.5 mm. Each right-hand, type N bit has a gold-coloured finish and a 135° tip with a split point for self-centring drilling. The cylindrical shank and high-quality surface treatment reduce friction and extend service life when working with alloy and non-alloy steel, cast steel, malleable cast iron, sinter iron, copper alloys and hard plastics.

Advantages

Precision ground tips and a split-point 135° geometry provide accurate self-centring and reduced walking on start. Titanium nitride coating and high-quality surface finish lower friction and increase wear resistance, extending tool life under high loads. The gold-coloured coating also facilitates quick bit identification and consistent performance across a range of materials.

Suitable for

Key specifications

How to use

Select the appropriate drill bit size for the required hole diameter and secure it in the drill chuck. Use steady feed and appropriate speed for the material being drilled; reduce speed for hard or heat-sensitive materials. Apply cutting fluid when working with steel or other metals to improve cooling and lubrication. Start drilling with light pressure to engage the split point for self-centring, then increase pressure steadily while maintaining alignment.

Recommendations

For best results, match drill speed and feed to the material, use cutting fluid for metalworking, and replace worn bits to maintain hole quality. Store bits in their case to protect the coating and cutting edges.