The Omega ER40 Collet is a coolant-sealed, ultra-precision tool holder designed for high-speed milling and drilling. It delivers dependable clamping for ER40 tooling while containing coolant under pressure to prevent leaks and maintain consistent performance.

With a clamping range of 3–26 mm and coolant capability up to 120 bar, this collet is built for demanding applications. Newer versions remove the rubber nose seal for improved durability, while the non-overlapping longitudinal slots minimize coolant loss. To maintain the seal, use only round-shank tooling with no clamping flats.

• Ultra-precise run-out (<10 μm): Delivers exceptional rigidity and concentricity for clean finishes and tighter tolerances, reducing scrap and rework.
• High-pressure coolant sealing up to 120 bar: Integrated metal seal keeps coolant contained at high speeds, boosting cooling efficiency and extending tool life.
• Non-overlapping longitudinal slots to prevent coolant loss: Ensures reliable coolant delivery during heavy cutting, with newer designs eliminating the rubber nose seal for greater durability.

This sealed ER40 collet solution enhances reliability and consistency across challenging machining tasks. It supports a wide range of tooling sizes, improves heat management at high speeds, and helps maintain steady accuracy throughout production runs. By choosing a robust, purpose-built coolant-sealed collet, you reduce downtime, improve surface finish, and gain confidence in every part you produce.