The Omega BT40 ER Collet Chuck is a precision tool holder built for BT40 spindle systems, delivering secure ER25 tool clamping with dependable performance in high-speed milling. It’s designed for shops that demand consistent accuracy, smooth finishes, and efficient tool changes in everyday CNC work.

• Spindle compatibility: Efficiently integrates with BT40 milling centers and BT40 spindles for broad compatibility in your machining setup.
• ER25 collet system: Uses the standard ER25 interface to hold a wide range of end mills and small-diameter tools with reliable grip.
• High-speed capability: Operates effectively from 15,000 to 25,000 RPM, with a practical emphasis around 20,000 RPM for common milling tasks.
• Precision ratings: G2.5 precision and G6.3 runout characteristics deliver tight concentricity and minimal runout for cleaner cuts.
• Gauge length: 200 mm gauge length provides extended reach while maintaining rigidity and balance during aggressive milling.
• Form AD construction: Form AD design emphasizes robust seating and repeatable tool changes in busy production environments.
• Durable construction: Machined from high-quality alloy provides lasting stability under high-speed machining and demanding workloads.

With this BT40 ER Collet Chuck, you gain repeatable tool changes, reduced runout, and consistent surface finishes across materials like aluminum, steel, and copper. The ER25 interface broadens tool compatibility, making it easier to switch tools without sacrificing accuracy. The 200 mm gauge length supports longer tools and deeper pockets while preserving balance at high RPMs. Ideal for 3- to 5-axis CNC milling, this chuck helps streamline setups, improve part quality, and boost production efficiency by delivering dependable clamping and concentricity from first pass to last.