Omega’s BT40 Shrink Fit Chuck with Front Face Coolant is a precision toolholding solution for BT40 spindles. It delivers secure tool clamping and exceptional rigidity for demanding milling and drilling tasks, with integrated front coolant channels that keep cutting tools cooler at high speeds.

Designed for engineers, machinists, and shops that demand consistent performance, this chuck is compliant with BT MAS403 (JIS 6339) standards and Form AD/B, and it is balanced to G2.5 at 25,000 RPM for reliable operation in production environments.

• Strong, stable shrink-fit clamping: Delivers high holding force and minimal runout to keep tools seated precisely at high RPMs, reducing chatter and delivering repeatable results.
• Front-face coolant cooling: Integrated coolant channels direct cooling to the cutting zone, extending tool life and maintaining tight tolerances during long, high-speed cuts.
• BT40 compatibility with precision balance: BT MAS403 (JIS 6339) compliant with Form AD/B, balanced to G2.5 at 25,000 RPM for smooth, reliable operation in production environments.

This combination of secure clamping, effective cooling, and standard-compliant design translates into faster setups, reduced downtime, and consistently high-quality finishes. By maintaining rigidity and controlling heat at speed, the chuck helps you improve throughput, extend tool life, and achieve repeatable results across a range of milling and drilling tasks.