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

The Omega ER20 Collet Coolant Sealed Ultra Precision is a high-performance ER20 collet designed for tools in the 3–13 mm range (including 10 mm tooling). It delivers ultra-tight run-out under 10 μm, helping you achieve accurate hole sizes and smooth finishes in milling and drilling operations. With a purpose-built coolant seal and robust construction, this collet keeps coolant where you need it most—at the tool tip—while maintaining stable clamping across jobs.

Built for demanding environments, the collet uses an integral metal seal that withstands coolant pressures up to 120 bar. The newer versions have no rubber seal on the nose, and the design includes non-overlapping longitudinal slots to prevent coolant loss. For best results, use only round shank tooling with no clamping flats, as tools with flats can compromise the seal and reduce performance.

• Ultra-precise run-out (<10 μm): Keeps tool engagement consistent under load, delivering tighter holes, better dimensional accuracy, and smoother surface finishes.
• High-pressure coolant seal up to 120 bar: Integral metal seal provides reliable sealing under aggressive cooling, reducing leaks and extending tool life. Newer versions have no rubber seal on the nose.
• Non-overlapping slot geometry for coolant retention: Slots are designed so they do not overlap at the center, dramatically reducing coolant loss and helping maintain reliable sealing across the 3–13 mm tooling range.

With these design choices, the Omega ER20 Collet Coolant Sealed Ultra Precision delivers dependable, repeatable performance in demanding machining tasks. It supports efficient setups, reduces downtime caused by coolant issues, and helps you achieve consistent results across jobs—from precise pocketing to clean finishing passes. Suitable for engineers, shop floor teams, and hobbyists alike, it’s a trusted choice when you need stable clamping, effective cooling, and predictable outcomes in ER20 tooling.