The absolute highlight of the ->SPIRO and SUPRA drill chucks is the automatic retightening. This function increases the clamping force proportionally to the cutting force of the tool during the drilling operation. That way slipping of the bit is prevented even under extreme loads.
If you need particularly high concentricity up to 0.05 mm, then the ->SPIRO series is right for you.
[Translate to english:]
1: Eng tolerierte Konus-Aufnahme für höchste Antriebskraft und Präzision
2: Metallkörper für externen Einsatz in Industrie und Handwerk
3: Selbstständige Nachspannfunktion zur Erhöhung der Spannkraft während des Bohrbetriebs im Rechtslauf
4: Gehärtete Flachbacken für höchste Rundlaufgenauigkeit und Haltekraft
Supra-l
automatically retightening flat jaw drill chuck for the industry with concentricity of up to 0.12 mm
Supra-S
automatically retightening flat jaw drill chuck, concentricity of up to 0.17 mm
Supra-SK
automatically retightening, impact-resistant, flat jaw drill chuck, concentricity of up to 0.25 mm
Supra-SK E
automatically retightening, impact-resistant, flat jaw drill chuck, concentricity of up to 0.35 mm