Omega Products ER25 Collet Coolant Sealed Ultra Precision - 10 Micron Run-Out - 8mm

Omega Products ER25 Collet Coolant Sealed Ultra Precision is a precision tool-holding solution designed for milling, drilling, and precision machining where coolant efficiency and tight tolerances matter. With run-out under 10 microns, it helps maintain accuracy across multiple passes and delivers consistent surface finishes. It clamps tooling in a 3–16 mm range, including common 8 mm shanks, making it versatile for demanding jobs.

Newer versions feature a nose without a rubber seal, while the integral metal seal is built to handle high‑pressure cooling up to 120 bar. The design uses longitudinal slots that do not overlap at the center, preventing coolant loss and preserving coolant flow. For optimal seal performance, use only round shank tooling with no clamping flats; tools with flats can render these collets ineffective.

• Ultra-precise run-out: Delivers better than 10 μm run-out to improve part accuracy and surface finish over repeated cycles.
• High-pressure coolant sealed design: Integral metal seal withstands coolant pressures up to 120 bar and minimizes leakage, with non-overlapping slots engineered to prevent coolant loss.
• Wide clamping range with round‑shank guidance: Accepts tools from 3–16 mm (including 8 mm tooling); to maintain seal integrity, use only round shank tooling with no clamping flats, as flats will compromise performance.

This coolant-sealed ER25 collet provides reliable, repeatable tool holding for demanding machining tasks. By combining tight run-out control, robust coolant containment, and clear instructions for proper tooling, it helps improve workflow, reduce downtime, and deliver consistent results across production runs.