Omega Products ER20 Collet Coolant Sealed Ultra Precision - 10 Micron Run-Out - 4mm

The Omega ER20 Collet with High Pressure Coolant Sealed design delivers ultra-precise run-out and robust coolant management for CNC milling and precision drilling. With a clamping range of 3–13 mm and an integral metal seal rated for up to 120 bar, this collet keeps tooling secure and workpieces consistent—newer versions feature a nose without a rubber seal for easier maintenance.

• Ultra-precise run-out: Achieves less than 10 μm run-out to improve part accuracy and deliver smoother surface finishes, reducing the need for rework on tight-tolerance parts.
• High-pressure coolant seal up to 120 bar: An integral metal seal maintains coolant pressure at the cutting zone, enhancing cooling efficiency and extending tool life during demanding operations.
• Leak-resistant nose with non-overlapping slots: Longitudinal slots do not overlap at the center to prevent coolant loss; newer versions use a rubber-free nose for reduced maintenance, and correct use requires round shank tooling with no clamping flats to preserve the seal.

This combination translates into faster, more reliable machining: steadier toolholding, fewer interruptions from coolant or seal issues, and consistent results across a wide range of milling and drilling tasks. The 3–13 mm clamping range and 120 bar cooling capability support demanding applications while keeping setup straightforward and productive.