Omega Products BT40 Slim Shrink Fit Chuck - G2.5 - 25,000RPM - 8mm Clamping Diameter - 120mm Gauge Length

The BT40 Slim Shrink Fit Chuck from Omega is designed for high-precision machining with a compact profile that improves accessibility to tools and toolpaths. Engineered to BT MAS403 (JIS 6339) standards and balanced to G2.5 at 25,000 RPM, it delivers secure, stable performance in demanding milling operations.

With an 8 mm clamping diameter and a 120 mm gauge length, this chuck strikes the right balance between rigidity and reach. Its slim form, along with a 3-degree taper and Form AD/B, ensures a reliable grip and consistent results even at high speeds.

• Slim, accessible BT40 design: Compact geometry reduces interference with toolpaths and surrounding components, making tool changes quicker and access easier in tight machining spaces.
• Reliable clamping with 8 mm diameter: Delivers secure, repeatable grip. The 3-degree taper and Form AD/B enhance rigidity, while BT MAS403 (JIS 6339) compliance ensures consistent performance.
• High-speed balance for smooth operation: Engineered to G2.5 at 25,000 RPM, providing reduced vibration, better surface finish, and longer tool life in fast-spinning applications.

This combination helps you improve workflow with quicker setups, steadier toolholding, and dependable performance across a range of BT40 spindle tasks. The 120 mm gauge length adds stable reach for precise machining, making it a trustworthy upgrade for professionals and hobbyists alike.