Omega Products ER11 Collet Coolant Sealed Ultra Precision - 10 Micron Run-Out - 4.5mm

The Omega ER11 Collet with a high‑pressure coolant seal delivers ultra‑precise toolholding for CNC milling, drilling, and precision finishing. With run‑out under 10 microns, it helps maintain accurate toolpaths across demanding materials and longer cycles. Built for engineers, tradespeople, and serious hobbyists, it provides dependable performance in tough machining environments.

Powered by an integral metal seal and capable of handling coolant up to 120 bar, this collet keeps coolant where it belongs and protects tool life. Its thoughtful slot geometry features longitudinal slots that do not overlap at the center to prevent coolant loss, and newer versions remove the rubber seal on the nose for longer life. For best results, use only round shank tooling with no clamping flats—tools with flats will render the seal ineffective.

• Ultra-precise sealed toolholding: less than 10 microns run‑out with an integral metal seal for repeatable accuracy under high coolant pressure.
• High‑pressure coolant resilience: supports up to 120 bar; non‑overlapping longitudinal slots prevent coolant loss and newer nose design eliminates the rubber seal for longer life.
• Round‑shank only compatibility: designed to seal best with round‑shank tools and no clamping flats; using tools with flats can compromise the seal and performance.

Together, these features translate to stable toolholding, reduced downtime from leaks, and longer tool life, even when pushing aggressive feeds and heavy coolant use. The result is more reliable finishes, quicker part cycles, and confidence across a wide range of milling and drilling tasks.