The BT40 Shrink Fit Chuck from Omega is a precision tool-holding solution designed for high-speed CNC milling and drilling. Built for 4 mm tool shanks, it delivers secure engagement and stable performance in demanding production environments, helping you keep throughput high and results consistent.

With a G2.5 precision rating, this chuck ensures excellent tool concentricity and minimal runout, so every cut stays true to your program. Operating at up to 25,000 RPM, it handles fast, aggressive machining while preserving surface finish and dimensional accuracy. The shrink-fit design uses heat expansion to firmly grip the tool shank, delivering stable, vibration-damped performance that reduces deflection and chatter.

• G2.5 precision with minimal runout: Ensures tight concentricity and repeatable accuracy across multiple passes, improving part quality.
• High-speed capability up to 25,000 RPM: Maintains precision and surface finish even in demanding, fast-cycle milling and drilling tasks.
• Secure shrink-fit grip with vibration damping: Heat-activated clamping provides a stable hold on 4 mm shanks, reducing deflection and smoothing machining results.

By delivering reliable concentricity, strong tool grip, and high-speed performance, the BT40 Shrink Fit Chuck helps you streamline setups, reduce scrap, and achieve consistent finishes across production runs. It supports efficient workflows, lowers downtime, and gives you confidence in every tooling decision.