The Omega ER40 Collet Coolant Sealed Ultra Precision is a high-precision toolholding solution designed for CNC milling, drilling, and finishing tasks where accuracy and reliable cooling are essential. Built for engineers, machinists, tradespeople, and serious hobbyists, it delivers tight run-out and dependable performance in demanding environments.

• Ultra-precise run-out (<10 μm): Ensures exceptionally concentric tool holding for superior surface finish and predictable cutting performance, even at high speeds.
• High-pressure coolant up to 120 bar with wide 3–26 mm clamping range: Provides robust cooling and versatile tool gripping across a broad range of tool sizes, helping control heat, extend tool life, and maintain dimensional accuracy. Newer versions feature an integral metal seal with no rubber nose seal for greater durability.
• Leak-resistant slot geometry and proper tooling compatibility: Longitudinal slots do not overlap at the centre to prevent coolant loss, keeping coolant where it belongs. For best results, use only round-shank tooling with no clamping flats to preserve the seal and performance.

This combination of exacting run-out, high-pressure cooling capability, and thoughtfully engineered seal design helps you achieve consistent cuts, reduced downtime, and reliable performance across a range of milling and drilling applications. Trustworthy, durable, and designed to keep your workflow moving smoothly, the Omega ER40 Collet is a solid choice for precision work with demanding coolant requirements.