The Omega ER40 Collet with a coolant-sealed design delivers dependable tool holding for high-precision milling and drilling where coolant delivery and run-out accuracy matter.

Designed for ER40 tooling, it supports round shanks from 3 to 26 mm with up to 120 bar of cooling pressure, helping maintain chip control and finish quality. Newer versions remove the rubber seal on the nose for a cleaner interface, while the slot design helps prevent coolant loss at the center.

• Ultra-Precise Run-Out: ≤10 μm run-out ensures tight, repeatable workholding that improves part accuracy and reduces finishing passes.
• High-Pressure Coolant Sealing: Sealed performance up to 120 bar with an integral metal seal, keeping coolant focused at the cutting edge for better chip evacuation and longer tool life.
• Slot Design & Tooling Compatibility: Longitudinal slots are arranged to prevent coolant loss at the center; newer versions have no rubber nose seal. Use only round shank tooling with no clamping flats to maintain the seal’s effectiveness—tools with flats can render the seal ineffective.

These features work together to streamline your workflow by delivering reliable, repeatable performance in high-pressure coolant environments. The tight run-out, robust sealing, and clear tooling requirements help reduce downtime, minimize rework, and ensure consistent results across production and prototyping tasks.