ER25 self-extracting collets DIN 6499 B are engineered for high-precision tool clamping on CNC machine tools, ensuring maximum stability, accuracy and reliability in demanding machining operations. The self-extracting design allows optimal coupling with the dedicated nut, simplifying tool changes and improving operational safety.

Manufactured from high-alloy hardened and ground steel, these collets provide excellent run-out accuracy and uniform clamping force distribution. This results in reduced vibration, minimized transmission play and improved control of geometric errors, even at high spindle speeds.

Each collet is designed with a defined clamping range, allowing precise tool diameter management and increased application flexibility. ER25 collets are widely used on CNC lathes, machining centers and milling machines, especially in high-precision industries such as automotive and advanced mechanical manufacturing.

Compatibility with internal coolant systems enhances chip evacuation and thermal control, extending tool life and improving surface finish quality. Tight tolerances and controlled geometry ensure repeatability and process stability, supporting accurate tool height settings and consistent machining performance.