Omega’s ER40 Collet with coolant sealing is built for precision milling and drilling where reliable coolant delivery and tight tool positioning matter. It covers a versatile clamp range from 3–26 mm and delivers ultra-precise alignment with run-out under 10 microns, making it ideal for engineers, machinists, and workshop professionals who demand consistent finishes and fewer reworks. Newer versions use a robust metal seal on the nose (no rubber seal) for longer service life, and the design includes non-overlapping longitudinal slots to prevent coolant leakage. For best results, use only round-shank tooling with no clamping flats to maintain the seal’s integrity.

• Ultra-precise run-out (<10 μm): Keeps tool paths true for consistent dimensions, smoother finishes, and fewer scrap parts.
• High-pressure coolant sealed (up to 120 bar): Integral metal seal directs coolant exactly to the cutting edge, reducing heat buildup and extending tool life; non-overlapping slots prevent coolant loss at center.
• Broad clamping range with seal-friendly design: 3–26 mm capacity provides flexibility across tools; for optimal sealing, use round-shank tooling with no flats to avoid leaks.

This coolant-sealed ER40 collet helps you maintain stable tooling performance under demanding cutting conditions, improving throughput and part quality. Its durable construction and precise run-out support reliable operation in busy shops, enabling longer tool life, cleaner finishes, and reduced downtime across milling and drilling applications.