Omega Products BT40 Shrink Fit Chuck - G2.5 - 25,000 RPM - 4mm - 90mm Long

The Omega BT40 Shrink Fit Chuck is a precision tool holder designed for high-speed milling on BT40 spindle systems. It uses a heat-expanded shrink-fit to securely grip a 4 mm tool shank, delivering stable, repeatable performance at speeds up to 25,000 RPM. With a 90 mm overall length, it provides balanced rigidity and consistent engagement across demanding cuts.

Ideal for engineers, machinists, tradespeople, hobbyists, and shop floors that require accurate toolholding, this chuck helps you maintain tight tolerances, reduce runout, and achieve better surface finishes even at high feed rates.

• Heat Shrink-Fit Grip: Heat expansion automatically clamps the 4 mm tool shank for a repeatable, vibration-damping hold that stays true under load.
• G2.5 Precision Concentricity: Tight tooling concentricity minimizes runout, ensuring accurate machining and a clean surface finish across finishes.
• 25,000 RPM Capability with Balanced 90 mm Body: Designed to run at high speeds with a long, balanced body to reduce deflection and improve stability during demanding milling tasks.

By delivering secure grip, precision alignment, and high-speed reliability, this BT40 shrink-fit chuck helps you keep tools turning at peak efficiency. Expect reduced tool deflection, better surface finish, longer tool life, and fewer rework cycles, whether you're machining aluminum, steel, or composites at high feed rates. Its 90 mm body offers stable balance for extended tool runs, making it a dependable foundation for demanding milling tasks.