Omega's ER40 Collet Coolant Sealed Ultra Precision delivers a reliable, high-precision solution for CNC milling where coolant delivery and concentricity matter. Designed for round‑shank tooling, the 12mm interface supports demanding applications while maintaining tight control over run-out. With run-out specified at ≤10 microns, you can expect consistent tool paths and superior surface finishes across jobs.

This collet is built for high‑pressure cooling and aggressive milling environments. It features an integral metal seal and a capability to handle up to 120 bar of coolant pressure, ensuring coolant reaches the cutting edge where it’s needed most. Newer versions omit the rubber nose seal, and the design uses non‑overlapping longitudinal slots to minimize coolant loss, helping you keep chips and heat away from the workpiece.

• Ultra‑precise run‑out (≤10 μm): Keeps cutting paths tight and consistent, improving diameter accuracy and surface finish for every part.
• High‑pressure coolant sealed design (up to 120 bar): Delivers reliable cooling and chip removal at the tool tip, enabling faster feeds and deeper cuts without overheating.
• Non‑overlapping slots with round‑shank requirement: Prevents coolant loss at high pressure; newer models use a sealless nose for durability—use only round‑shank tooling (no clamping flats) to maintain the seal's effectiveness.

The Omega ER40 Collet Coolant Sealed Ultra Precision helps you streamline setups, reduce tool wear, and achieve repeatable results across a broad range of milling tasks. Its robust construction and precise tell‑tale run-out offer confidence in production runs, whether you’re in a professional shop or tackling precision projects at home.