The ER11 clamping collets according to DIN ISO 15488 (DIN 6499) represent one of the most widely used and reliable tool holding systems in precision machining applications. Designed for use with ER collet chucks mounted on milling machines, CNC machining centers and lathes, these collets provide secure and highly precise clamping of cylindrical shank tools.

Manufactured according to the international DIN ISO 15488 standard, these collets ensure full compatibility and interchangeability with all ER collet chuck systems available on the market. The Class 1 metric bore specification guarantees high clamping accuracy and consistent force distribution on the tool shank.

The collet geometry features 16 elastic slots which allow controlled deformation during tightening. This design enables the collet to adapt precisely to the tool diameter while maintaining uniform pressure along the contact surface. As a result, vibration, runout and micro-slippage are significantly reduced during machining operations.

The progressive clamping range allows a wide range of tool diameters to be covered within the same collet family, simplifying tool management and reducing the number of required components in the workshop. Typical concentricity accuracy of up to ≤ 0.008 mm enables high-precision machining, improving both tool life and the surface finish of machined components.

The collet surfaces are precision ground with a surface roughness of Rz 1.6, ensuring optimal contact with both the tool and the collet holder. This finishing quality contributes to improved clamping stability and long-term wear resistance.

ER11 collets are widely used across many industrial sectors including precision CNC machining, automotive component manufacturing, mold making, precision mechanics and high-speed machining applications. They are particularly suitable for production environments where dimensional accuracy, repeatability and process stability are critical.

For machinists, production engineers and machine tool manufacturers, ER collets represent a proven technological solution for optimizing the performance of the spindle-tool system, improving machining quality, productivity and tool life.