The Omega ER40 Collet is a coolant-sealed, standard-precision collet designed for milling and turning work. It accepts tool shanks from 3 to 26 mm and delivers run-out under 10 μm for consistently accurate results. Built for workshops, production floors, and hobbyist setups, it helps keep coolant contained and provides a reliable, repeatable grip on your tooling.

• Coolant-sealed design with non-overlapping slots: Minimizes coolant loss at the nose, helping keep your work area cleaner and your milling or turning operations more predictable.
• Sub-10 μm run-out: Tight, repeatable grip that improves dimensional accuracy and surface finish, reducing the need for rework.
• 3–26 mm clamping range with round-shank tooling: Wide compatibility for common tooling, while the seal relies on round shanks (no clamping flats) to maintain performance; using tools with flats can render the seal ineffective.

With its robust construction and precision-focused design, this ER40 collet streamlines setups, enhances stability during heavy cuts, and supports reliable results across a range of materials. Use only round-shank tooling to preserve the coolant seal and achieve consistent performance, clean workpieces, and improved workflow efficiency across your machining projects.