The Omega ER40 Collet with coolant-sealed design delivers precise, reliable tool holding for high-pressure milling and drilling. Built for engineers, machinists, and serious hobbyists, it ensures consistent run-out control and clean coolant delivery at the cutting edge.

Designed for high-pressure cooling up to 120 bar with a clamping range of 3–26 mm, this sealed ER40 collet keeps chips moving and heat under control for longer tool life and more predictable finishes. Note: newer versions use a metal nose seal with no rubber seal, and the seal relies on round shank tooling with no clamping flats to stay effective.

• Ultra-precise coolant-sealed performance: Run-out under 10 µm and an integral metal seal ensure accurate tool positioning and reliable cooling directly at the cutting edge.
• High-pressure capability with broad clamping range: Handles coolant up to 120 bar and clamps 3–26 mm tooling, delivering consistent grip and chip removal in demanding milling operations.
• Leak-resistant seal geometry for dependable operation: Longitudinal slots do not overlap at centre to prevent coolant loss; newer versions have no rubber seal on the nose; for full seal integrity, use only round shank tooling with no clamping flats.

This Omega ER40 collet enhances your workflow by delivering stable tool retention, efficient coolant delivery, and predictable results across tough milling tasks. With its rugged construction and precision-driven design, you’ll experience reduced downtime, improved surface finishes, and longer tool life—backed by a seal system you can trust in high-pressure environments.