Broca KWB 206555 5,5 mm 1 ud.

The KWB 206555 drill bit is a 5.5 mm precision ground twist drill made to DIN 338 with right-hand cut, type N. It has a self-colour finish, a 135° tip angle and is cross-ground to DIN 1412 C for self-centering performance. The cylindrical shank and industrial quality construction make it suitable for drilling steel, alloyed steel, cast steel, die castings, sintered steel, non‑ferrous metals and hard plastics. Supplied as a single piece in a blister pack, the drill bit is intended for accurate general-purpose drilling where a standard DIN-compliant tool is required.

Advantages

Precision grinding and adherence to DIN 338 ensure consistent geometry and reliable cutting action. The 135° tip and cross-ground point improve centering and reduce walking at drill start. Industrial-quality steel construction provides wear resistance across a range of materials. The cylindrical shank fits standard chucks and the single-piece blister pack protects the tool during storage and transport.

Suitable for

Key specifications

How to use

Clamp the 5.5 mm KWB 206555 drill bit securely in a compatible chuck. Select appropriate spindle speed and feed for the work material — lower speeds for harder metals, higher speeds for non‑ferrous metals and plastics. Use cutting fluid when drilling steels and alloyed steels to improve tool life and chip evacuation. Start drilling with light pressure to allow the self‑centering cross-ground tip to locate the hole, then apply steady feed until the hole is completed.

Recommendations

For best results, use appropriate cutting oil when machining steels, ensure correct spindle speed for the material, and replace the drill if excessive wear or chipping appears. Store the drill in its blister pack or a protective case to avoid damage to the ground tip.