The BT40 Slim Shrink Fit Chuck from Omega is built for high-precision milling in tight spaces. With an 18 mm clamping diameter and a 160 mm gauge length, it fits easily into compact setups while delivering repeatable, dependable grip. Manufactured to BT MAS403 (JIS 6339) standards, it combines superior clamping strength and rigidity with a precise 3-degree taper and Form AD/B for consistent tool retention at high speeds.

• High‑speed stability at 25,000 RPM: Balanced to G2.5 @ 25,000 RPM for exceptional performance and minimal runout, delivering smooth finishes and accurate features in demanding milling applications.
• Rigid, secure shrink‑fit clamping: The shrink‑fit design provides strong, repeatable grip across tools, enhancing concentricity and reducing tool slip during heavy cutting.
• Compact design for enhanced accessibility: Slim profile and 160 mm gauge length allow closer reach to tight features and easier setup in crowded machine cells, improving overall workflow.

With this chuck installed, expect faster tool changes, reduced setup time, and consistently high-quality results during high‑speed machining. Its BT MAS403 (JIS 6339) compliance, along with the 3-degree taper and Form AD/B geometry, ensures reliable performance and long-term durability—giving you confidence to push for greater productivity and precision across a range of jobs.