The Nanocut Technologies BT40 FMB 27–160 is a high-performance hydraulic expansion tool holder engineered for exceptional runout accuracy (<3 µm), vibration damping, and consistent clamping force across the full 27–160 mm shank diameter range. Featuring a hardened steel body, precision-machined hydraulic chamber, and corrosion-resistant finish, it delivers superior rigidity and longevity in demanding milling, drilling, and finishing applications. Compatible with all standard BT40 spindles, this holder supports high-speed machining up to 25,000 RPM and ensures repeatable tool change accuracy for CNC machining centers. Includes integrated pressure relief and easy-to-read scale markings for quick, reliable setup.