Omega Products ER25 Collet Coolant Sealed Standard Precision - 10 Micron Run-Out -3mm

The Omega ER25 Collet Coolant Sealed is a precision toolholding solution designed for CNC milling, drilling, and other precise machining tasks. With run-out of less than 10 microns and a versatile 3–16 mm clamping range, it helps keep tools precisely centered for consistent tolerances and smooth finishes. It’s ideal for engineers, machinists, hobbyists, and shop teams who need reliable performance in everyday operations.

Newer versions feature a redesigned nose seal without a rubber component. The coolant seal relies on the tooling geometry and non-overlapping center slots to prevent coolant loss, helping maintain effective cooling and cleaner operation. For optimal sealing, use only round-shank tooling with no clamping flats.

• Ultra-precise run-out: Delivers running accuracy within <10 μm to maintain concentricity and improve part quality across multiple passes.
• Coolant-sealed, leak-preventing design: Non-overlapping longitudinal slots at the center minimize coolant leakage, reducing mess and protecting spindle internals while cooling the tool.
• Wide clamping range with robust ER25 interface: 3–16 mm tooling compatibility provides versatility in a single collet, enabling quick tool changes and consistent performance.

This collet setup helps you streamline setups, reduce downtime from coolant leaks, and achieve repeatable results with a broad range of tools. By combining tight run-out, a reliable coolant seal, and flexible clamping, it supports efficient workflows and higher-quality finishes without the need for multiple adapters or collets.