Omega Products ER20 Collet Coolant Sealed Standard Precision - 10 Micron Run-Out -4mm

The Omega ER20 Collet with coolant seal is a precision tool holder engineered for milling and CNC work that demands tight tolerances and clean coolant management. It clamps round-shank cutting tools within a 3–13 mm range, delivering sub-10 micron run-out for consistently accurate finishes. Newer versions emphasize a robust nose design by removing the rubber seal, relying on precisely machined features to keep coolant where it belongs. To ensure the seal works as intended, use only round shank tooling with no clamping flats.

• Ultra-precise clamping: Delivers sub-10 μm run-out to help maintain tight tolerances and deliver repeatable surface finishes across milling passes.
• Leak‑free coolant seal: Longitudinal slots are engineered not to overlap at the center, reducing coolant leakage and keeping the work area cleaner and more predictable.
• Versatile, round-shank compatibility: Fits tools from 3 to 13 mm in diameter and works best with round shanks with no clamping flats, ensuring reliable sealing and performance.

This collet supports faster, cleaner machining by combining precise grip with effective coolant containment. It helps reduce downtime from tool chatter and leaks, improves finish quality on each pass, and delivers dependable, repeatable results in demanding milling tasks.