The Omega ER40 Collet with Sealed High-Pressure Coolant is designed for precision milling and drilling where coolant efficiency and tool stability truly matter. It clamps 3–26 mm round tooling and supports coolant pressures up to 120 bar, helping you maintain consistent run-out and clean finishes even through demanding cuts.

Newer versions replace the nose seal with a robust metal seal for greater durability under sustained high-pressure cooling. The design uses non-overlapping longitudinal slots at the center to prevent coolant loss, keeping the cutting zone cooler and reducing chip buildup. For best results, ensure you are using solely round shank tooling with no clamping flats to maintain the seal.

• Run-out < 10 μm: Delivers exceptional concentricity for tight tolerances, smoother finishes, and longer tool life across a wide range of materials.
• High-Pressure Coolant Seal Up to 120 bar: Integrated metal seal provides reliable coolant delivery and minimizes leaks, improving cooling efficiency and cutting performance.
• Non-Overlapping Slot Seal Design: Slots are arranged to prevent coolant leakage; use only round-shank tooling with no clamping flats to preserve the seal and maintain performance.

This sealed ER40 collet offers dependable toolholding, efficient coolant delivery, and predictable results in challenging machining tasks, helping you reduce downtime and achieve consistent, high-quality finishes.