Omega Products ER25 Collet Coolant Sealed Standard Precision - 10 Micron Run-Out -7mm

The Omega ER25 Collet is a coolant-sealed, standard-precision toolholder designed for milling and drilling tasks that demand tight tolerances and clean coolant management. With a run-out of less than 10 microns, it helps you achieve repeatable, high-quality results.

Designed for round shank tooling in the 3–16 mm range, it uses a non-overlapping nose slot design to minimize coolant leakage at the cutting edge. Note: some newer versions have no rubber seal on the nose; to maintain the seal, use only round shank tooling with no clamping flats—tools with flats will render the seal ineffective.

• <10 μm Run-Out: Delivers exceptional accuracy with repeatable results, helping you meet tight tolerances and achieve smoother finishes across parts.
• Wide clamping range (3–16 mm): Covers a broad spectrum of common round tools, enabling quick setups and reducing the need for multiple collets, which boosts productivity.
• Enhanced coolant retention and seal integrity: Non-overlapping longitudinal slots minimize coolant loss at the nose; note that newer versions may omit the rubber seal—maintain sealing by using only round shank tooling with no clamping flats to avoid compromising performance.

By delivering ultra-precise run-out alongside reliable coolant containment, this ER25 collet supports faster changeovers, reduced downtime, and consistently high-quality finishes across a wide range of tooling sizes. Its durable construction and sealed design provide confidence in production runs, helping you achieve repeatable results and longer tool life.