High precision ER25 collets compliant with DIN 6499 are designed to ensure extremely stable, accurate and repeatable tool clamping in CNC machines, machining centers and automatic lathes. Manufactured from high-alloy steel, hardened and ground, they provide excellent geometric stability and wear resistance, maintaining consistent performance even under demanding conditions.

Their operating principle is based on controlled elastic deformation, allowing uniform clamping force distribution across the entire tool surface. This significantly reduces transmission play and vibration, improving machining quality and minimizing form and positional errors.

These collets are available in two clamping ranges. Narrow range versions (1.0–3.0 mm) are optimized for high precision applications requiring maximum concentricity. Wider range versions (4.0–16.0 mm) provide greater flexibility, enabling multiple tool diameters to be used with a single collet while maintaining industrial-grade precision.

They are suitable for milling, drilling, boring and tapping operations, including applications with through-coolant systems. Clamping quality directly affects surface finish, dimensional accuracy and tool life.

Widely used in automotive, aerospace, precision engineering and advanced manufacturing, they are also essential in quality control processes where repeatability is critical.

Manufactured according to DIN 6499, they ensure full compatibility with ER collet chucks and seamless integration into existing tooling systems.