Kierrep pora KWB 205085 1 kpl oikeakätinen

The KWB 205085 twist drill bit is a precision-ground, type N drill manufactured to DIN 338 standards for right-hand cutting. It has a 135° tip angle with cross-ground geometry to DIN 1412 C for improved centring and consistent performance. The bit is supplied in natural (self) colour with a cylindrical shank and is intended for industrial-quality drilling in materials such as steel, alloyed steel, cast steel, die castings, sintered steel, non-ferrous metals and hard plastics.

Advantages

This twist drill bit offers self-centring cross-ground tips and a 135° tip angle that reduce walking when starting holes and improve accuracy on a range of materials. Precision grinding to DIN tolerances ensures consistent diameter and cutting geometry. The cylindrical shank provides stable clamping in standard chucks and the single-piece supply allows easy replacement or use as a spare.

Suitable for

Key specifications

How to use

Secure the cylindrical shank in an appropriate drill chuck and ensure the drill is running in right-hand rotation. Select suitable spindle speed and feed for the material being drilled; use cutting fluid or coolant when working with steel or alloyed metals to prolong tool life and improve chip evacuation. Start drilling with light pressure to allow the self-centring tip to locate the hole, then apply steady feed until the hole is completed.

Recommendations

For best results, use recommended cutting speeds for the specific material, maintain correct coolant application for metalworking, and regularly inspect the drill bit for wear. Replace the bit if the tip is rounded or if diameter tolerance is compromised.