The Omega BT40 Slim Shrink Fit Chuck is a high-precision workholding solution designed for BT40 spindle systems. Its slim, compact form improves accessibility in tight machine envelopes, helping operators change tools quickly and maintain accurate runout even in crowded setups.

Manufactured to BT MAS403 (JIS 6339) standards with a 3-degree taper and Form AD/B, this chuck delivers strong clamping, rigidity, and balanced performance at high speeds. Optimized for 25,000 RPM, it maintains stable, chatter-free operation with a 12 mm clamping diameter and a 120 mm gauge length for consistent, reliable results.

• Slim, Accessible Design: The compact 120 mm gauge length and slim profile provide easy access to the work area, enabling faster tool changes and reducing interference in compact machine layouts.
• High-Strength Shrink Fit Clamping: Shrink-fit retention delivers a uniform grip on the 12 mm tooling diameter, reducing runout and chatter for better surface finishes and longer tool life at high speeds.
• BT40 Precision & High-Speed Balance: Engineered to BT MAS403 (JIS 6339) with a 3-degree taper and Form AD/B, this chuck is balanced to G2.5 at 25,000 RPM for stable, reliable performance in demanding applications.

Together, the design and tolerances translate to faster setups, more consistent results, and reduced rework, helping your workflow stay efficient at high speeds. This chuck delivers reliable clamping, precise runout control, and durable performance to support repeatable, high-quality milling results day after day.