Omega Products BT40 Slim Shrink Fit Chuck - G2.5 - 25,000RPM - 20mm Clamping Diameter - 90mm Gauge Length

The Omega BT40 Slim Shrink Fit Chuck is a precision toolholding solution for BT40 spindles, designed with a compact, slim profile that improves accessibility in tight machining spaces. It’s ideal for engineers, machinists, and hobbyists who value fast, reliable tool changes without sacrificing rigidity.

Manufactured to BT MAS403 (JIS 6339) standards, this chuck delivers strong clamping and high rigidity in demanding conditions. Its 3-degree taper and Form AD/B are engineered for balance and stability, and the 20mm clamping diameter with a 90mm gauge length supports a wide range of small-diameter tools while running cleanly at up to 25,000 RPM.

• Slim, accessible design: Compact form improves access to tight work zones and short tool pockets, reducing setup time and enabling quicker tool changes without compromising grip.
• Rigid, high-speed clamping: 3-degree taper with Form AD/B provides a secure hold and minimizes runout and vibration, delivering consistent finishes at 25,000 RPM.
• Industry-standard precision and balance: Built to BT MAS403 (JIS 6339) and balanced to G2.5 @ 25,000 RPM for dependable performance in demanding applications.

This combination of compact design, proven standards, and precise balance translates to tangible benefits: faster setups, less downtime, and more reliable tool life, with repeatable accuracy across challenging materials and complex pockets. Whether you’re upgrading existing equipment or equipping a new workstation, this BT40 shrink-fit chuck delivers stable, high-speed performance and consistent results that your shop can rely on.