The Omega BT40 Shrink Fit Chuck with Front Face Coolant is a precision toolholding solution for BT40 spindle systems. It delivers a rock-solid clamp and tight runout control for repeatable parts across demanding milling and drilling tasks. Built to BT MAS403 (JIS 6339) standards and Form AD/B, it also incorporates integrated front coolant channels to keep heat where it belongs — at the machine, not the part.

Engineered for high-speed performance, the chuck is balanced to G2.5 at 25,000 RPM and features a precise 4.5-degree angle. With a 16 mm shank and 120 mm length, it fits a broad range of machines while providing direct-front-coolant delivery for efficient heat management during extended cycles.

• BT40 shrink-fit interface: Provides a secure, rigid grip with minimal runout for consistent tool seating and repeatable results.
• Front-face coolant integration: Delivers cooling directly to the cutting edge, helping extend tool life and maintain accuracy during high-speed milling.
• Optimized balance and geometry: 4.5-degree design with G2.5 balance at 25,000 RPM minimizes vibration for smoother cuts and reliable performance.

With this chuck, you gain faster setup times thanks to shrink-fit tool changes, reduced downtime, and steadier performance under heavy loads. The combination of direct coolant delivery, precise clamping, and high-speed balance supports tighter tolerances, improved surface finishes, and longer tool life across production runs or precision jobs.