Στριφτό τρυπάνι KWB 217100 1 τεμ. δεξιόστροφο

Twist drill bit KWB 217100, right hand rotation, conforms to DIN 340 with type N geometry and precision ground finish. The drill is self-colour with a 135° tip angle and cross-ground according to DIN 1412 C. It has a cylindrical shank and an extra-long length for deeper drilling applications. Supplied as a single piece in a protective box, this industrial-quality drill is suitable for use on a range of materials including steel and alloyed steel, cast steel, die castings, sintered steel, non-ferrous metals and hard plastics.

Advantages

The precision-ground flutes and cross-ground tip provide improved centring and reduced wandering when starting holes. Extra-long geometry enables deeper reach without extensions. Conformance to DIN standards (DIN 340, DIN 1412 C) ensures dimensional consistency and compatibility with chucks and holders. Industrial-quality manufacturing offers durability across repeated use on a variety of materials.

Suitable for

Key specifications

How to use

Secure the drill bit in a suitable chuck or holder that accepts cylindrical shanks. Select appropriate spindle speed and feed rate for the material being drilled; use lower speeds and steady feed for harder materials such as alloyed steel and cast steel, and higher speeds for non-ferrous metals and plastics. Apply cutting fluid when drilling ferrous materials to improve cooling and tool life. Start drilling with light pressure to ensure correct centring from the cross-ground 135° tip, then increase feed to maintain steady cutting.

Recommendations

For extended tool life, use suitable cutting fluid on ferrous materials, avoid excessive axial force, and monitor drill wear. Replace the bit when tip wear or chipping degrades hole quality.