Yaskawa Electric Corporation UAASKJ-37FZ100E AC Spindle Motor

The Yaskawa UAASKJ-37FZ100E is a high-performance 37 kW AC spindle motor designed for CNC machine tools, delivering stable torque and precise speed control for high-speed cutting. It runs on 230 VAC three-phase (typical) and provides about 50 HP, with a base speed of roughly 1,150 RPM and a maximum speed up to 4,500 RPM. This flange-mounted unit uses external fan cooling and supports continuous or intermittent machine-tool duty, with encoder feedback for spindle orientation (model dependent). It is engineered for CNC spindle drive systems and is commonly deployed in vertical and horizontal machining centers, turning centers, and automated production lines for metal cutting, drilling, milling, and tapping operations demanding stable speed control and reliability. Yaskawa spindle motors are designed for high torque at low speeds and high efficiency at high speeds, making them suitable for retrofit, rebuild, or replacement of legacy tools. Common replacements include the UAASKJ-37FZ300E and the UAKAJ-37C SD Series spindle motors. This model is typically sourced by maintenance teams, OEMs, and integrators seeking legacy-market availability for spindle replacements and upgrades.