Omega Products ER25 Collet Coolant Sealed Standard Precision - 10 Micron Run-Out -14mm

The Omega ER25 Collet is a coolant-sealed, standard-precision tool holder designed for ER25 chucks. This 14mm variant delivers ultra-tight run-out for round-shank cutting tools used in milling and drilling applications.

Versatile and reliable, it clamps tools across a 3–16 mm range and is built for engineers, machinists, and hobbyists who value consistent performance with minimal coolant leakage.

• Ultra-tight run-out (<10 μm): Achieve precise toolholding with run-out under 10 microns, helping parts stay within tolerance and reducing rework.
• Coolant-sealed, center-slot design: Longitudinal slots do not overlap at the centre to prevent coolant loss, keeping your work area cleaner and protecting tooling; note that some newer versions have no rubber seal on the nose.
• Wide clamping range for round shanks (3–16 mm): Provides flexibility to hold a variety of common cutters and drills securely; to maintain the seal, use solely round shank tooling with no clamping flats—tools with flats will render the collet ineffective.

This collet is designed to deliver reliable performance in demanding machining tasks, helping you finish jobs with consistency and less downtime. For best results, ensure you use only round shank tooling without clamping flats to preserve the coolant seal and achieve true, repeatable accuracy across your workflow.