The Omega ER25 Collet is a coolant-sealed toolholding solution designed for CNC milling and other precision machining tasks. It delivers ultra-precise clamping with reliable coolant delivery, making it a strong choice for engineers, tradespeople, and hobbyists who demand consistent results.

Key specifications include an ultra-low run-out of under 10 μm and a high-pressure coolant capability up to 120 bar, with a clamping range of 3–16 mm. Newer versions use a metal seal on the nose (no rubber seal), enhancing durability in demanding shop environments.

• Ultra-low run-out (<10 μm): ensures precise tool engagement and a smooth, repeatable surface finish across multiple passes.
• High-pressure coolant sealed design up to 120 bar: integral metal seal minimizes coolant leakage and concentrates cooling at the cutting edge for improved performance and longer tool life. Newer versions have no rubber nose seal for increased durability.
• Wide 3–16 mm clamping range with round-shank tooling requirement: versatile for a broad range of tools; to maintain seal integrity, use only round shank tooling with no clamping flats—tools with flats can render the seal ineffective.

This combination of precision, sealed coolant performance, and flexible clamping makes the Omega ER25 Collet a reliable choice for a variety of milling tasks. It helps reduce downtime, improves consistency across productions, and supports cleaner finishes and longer tool life in demanding applications.