Omega BT40 Shrink Fit Chuck with Front Face Coolant is a precision toolholding solution designed for BT40 spindle machines. It delivers strong, repeatable clamping and rigid support for milling, drilling, and finishing tasks, helping you achieve tighter tolerances and cleaner finishes.

Built to BT MAS403 (JIS 6339) standard with Form AD/B geometry, it includes integrated front coolant channels to keep the cutting zone cool during high-speed operations. With a precise 4.5-degree seating angle and balance class G2.5 at 25,000 RPM, this chuck offers reliable performance even under demanding loads.

• Front Face Coolant Integration: Integrated channels deliver coolant directly to the tool interface, reducing heat buildup, preserving accuracy during high-speed cuts, and helping extend tool life.
• Precision Balance for 25,000 RPM: Balanced to G2.5 at 25,000 RPM for smooth rotation, reduced vibration, and improved surface finish across hard milling and high-speed applications.
• BT MAS403/JIS 6339 Form AD/B Compliance: Form AD/B construction with MAS403/JIS 6339 standards ensures dependable clamping, consistent performance, and long-term reliability in demanding shop environments.

This combination translates to faster setups, reduced downtime, and consistently repeatable results. The front-face coolant helps manage thermal effects during long or aggressive cuts, while the rigid shrink-fit holding minimizes tool runout and chatter. The result is improved productivity, longer tool life, and higher-quality finishes across a wide range of BT40 milling operations.