Explore our BT40 Slim Shrink Fit Chuck, engineered for high-precision machining with a compact design that improves accessibility. It features an 18 mm clamping diameter and a 90 mm gauge length, delivering strong holding power where space is limited.

Manufactured to BT MAS403 (JIS 6339) standards, this chuck offers superior clamping strength and rigidity. Featuring a 3-degree taper and Form AD/B, the chuck is perfectly balanced to G2.5 at 25,000 RPM for exceptional performance and stability in high-speed applications.

• Slim, Compact Design for Easy Access: Fits into tight work envelopes and makes tool changes faster without sacrificing grip strength.
• Industry-Standard Clamping (BT MAS403 / JIS 6339): Delivers strong, uniform holding power and high rigidity for repeatable performance across cycles.
• High-Speed Balance and Precision (G2.5 @ 25,000 RPM, 3° taper, Form AD/B): Ensures stable cutting with minimal vibration at top speeds for clean finishes and longer tool life.

By combining a compact form, robust clamping, and precise high-speed balance, this BT40 Slim Shrink Fit Chuck helps reduce setup time, minimize runout, and deliver consistent finishes across a wide range of materials. It supports a smoother, more productive machining workflow for engineers, machinists, and hobbyists alike.