The GAETANO CAPORALI ER8 collets are designed to ensure precise and reliable clamping of cutting tools in high-precision machining applications. Manufactured in accordance with DIN ISO 15488 (DIN 6499), these collets are used with ER tool holders installed on CNC milling machines, machining centers and other machine tools used for precision mechanical production.

The collet geometry is specifically designed to provide uniform clamping along the entire contact surface of the tool shank. The 12-segment front slot design allows controlled elastic deformation during tightening, ensuring even force distribution and improved stability of the cutting tool during machining.

ER8 collets clamp the tool on its nominal diameter, enabling high precision performance and consistent repeatability. The average run-out accuracy of 0.005 mm reduces tool vibration and oscillation, improving machining quality and extending tool life.

The internal surface of the collet features a controlled finishing quality with Rz 16 surface roughness, ensuring uniform contact with the tool shank and maintaining stable clamping even under demanding machining conditions.

Thanks to their precision and reliability, ER8 collets are widely used in industries such as automotive manufacturing, precision mechanics, mold production, CNC machining and advanced mechanical engineering, where stable tool holding and high concentricity are essential.