The ER Mini collet chuck with SK40 shank is a highly precise and versatile solution for clamping tools with cylindrical shanks, in compliance with DIN ISO 15488-B. Its compact structure and reduced dimensions make it particularly suitable for operations requiring excellent accessibility to the workpiece, such as complex milling, machining in deep cavities, or areas that are difficult to reach with standard tool holders. Thanks to the wide clamping range of the collets, it is possible to secure shanks with different tolerances, increasing flexibility of use and reducing the need for numerous dedicated tool holders.

Technical Data:

In terms of performance, the ER Mini chuck with SK40 shank ensures high stability and precision during machining. The run-out accuracy of less than 0.008 mm at 2.5 times the tool diameter guarantees excellent concentricity, improving machining quality and minimizing tool wear. The balancing grade of G2.5 up to 25,000 rpm or Umax less than 1 gmm makes this tool holder ideal for high-speed applications, typical of high-performance milling, where vibration reduction is essential to ensure stability, accuracy, and long-term durability.

The supplied clamping nut allows safe and uniform tool holding, while also providing practicality and speed during tool changes. The SK40 interface, widely used in modern machining centers, ensures rigidity, repeatability, and reliability of clamping, all of which are essential in precision machining.

This ER Mini chuck with SK40 shank is widely used in high-tech sectors such as aerospace, automotive, mold making, and precision engineering, where complex machining and the need for optimal accessibility require compact, reliable, and high-performance solutions. In these contexts, the combination of optimized accessibility, high precision, and capability for high-speed machining makes this tool holder an indispensable element for improving process quality and production efficiency.