Omega Products BT40 Slim Shrink Fit Chuck - G2.5 - 25,000RPM - 14mm Clamping Diameter - 160mm Gauge Length

The BT40 Slim Shrink Fit Chuck from Omega is a precision toolholding solution designed for high-speed machining. Its slim, compact profile improves accessibility in crowded tool zones while delivering secure, repeatable tool retention for 14 mm shanks. Ideal for engineers, machinists, and shop-floor technicians, it helps maximize productivity on CNC mills and turning centers.

Built to BT MAS403 (JIS 6339) standards, this chuck combines strong clamping and rigidity with a 3-degree taper and Form AD/B. It is engineered to be perfectly balanced to G2.5 at 25,000 RPM, delivering stability and precision even in demanding high-speed applications.

• Slim, Accessible Design: The compact BT40 body reduces interference with surrounding tooling and fixtures, enabling quicker tool changes and easier setups in tight work envelopes.
• Secure Shrink-Fit Clamping: The 14 mm clamping diameter provides a firm, repeatable grip that minimizes runout and improves part accuracy across cuts.
• High-Speed Precision Balance: With a BT MAS403 taper, Form AD/B, and G2.5 balance at 25,000 RPM, you get stable cutting, reduced vibration, and consistent performance in demanding operations.

Together, the BT40 Slim Shrink Fit Chuck delivers improved concentricity, faster setup, and reliable tool retention for repeatable, high-quality results. The 160 mm gauge length provides robust support and stiffness for high-speed milling and turning, helping to minimize downtime, extend tool life, and achieve cleaner finishes with tighter tolerances across production runs.