The Omega BT40 Slim Shrink Fit Chuck is a precision toolholder designed for CNC milling and high-speed machining. With a 10 mm clamping diameter and a 90 mm gauge length, its slim profile fits tight workspaces while delivering a strong, repeatable grip and fast tool changes—making it ideal for engineers, fabricators, and hobbyists who demand reliable performance in challenging setups. Built to BT MAS403 (JIS 6339) standards, it is balanced to G2.5 at 25,000 RPM for stable, high-speed operation.

• Slim, accessible design: The compact BT40 shrink-fit body reduces overhang and improves accessibility in tight work envelopes, enabling quicker tool changes and easier setup without interference.
• High-speed stability and precision: Precisely balanced to G2.5 at 25,000 RPM for smooth operation, reduced vibration, and consistent cutting accuracy at high speeds.
• Robust shrink-fit clamping (10 mm, BT40): Shrink-fit with a 3-degree taper and Form AD/B, manufactured to BT MAS403 (JIS 6339) standards, delivering strong grip, rigidity, and repeatable results for small-diameter tooling.

Using this chuck helps your shop achieve tighter tolerances and cleaner finishes while reducing downtime. The reliable clamping and balanced design support longer tool life and faster setups, boosting overall productivity in demanding milling tasks.