ER11 DIN 6499 collets with coolant sealing are an advanced technical solution for tool clamping in precision machining applications where coolant control is essential to ensure process stability, surface quality, and tool life. This specific ER11 range, characterized by compact dimensions and high accuracy, is designed for CNC machine operations requiring efficient coolant delivery through tools with internal channels.

The operating principle is based on the standard ER geometry according to DIN 6499 (DIN ISO 15488), ensuring uniform clamping force distribution along the entire tool shank. Neoprene inserts integrated into the collet slots provide effective sealing and allow the coolant to be directed exclusively through the tool’s internal channel, preventing leakage and enabling efficient lubrication and chip evacuation, even in deep or high-speed machining processes up to 25 bar.

From a metrological standpoint, ER11 collets ensure high concentricity and reduced transmission play between tool and spindle, minimizing form errors and geometric deviations. The improved clamping stability reduces vibrations, enhances surface finish, and ensures higher process repeatability.

The application range includes milling, drilling, and precision machining of small components, where the compact ER11 size and controlled coolant flow are critical. These collets are widely used in automotive, precision engineering, and mold-making industries, where high performance in terms of accuracy, stability, and reliability is required.