Yaskawa Electric Corporation USAFED-20-HS31 AC Servo Motor

The USAFED-20-HS31 is a brushless AC servo motor in Yaskawa's USAFED (F Series), designed for low-speed, high-torque operation in CNC and automation systems that require precise speed and torque control. It provides roughly 1.8–2.0 kW of rated power, a nominal speed of about 1500 RPM (HS configuration typical), at approximately 200 VAC and ~15 A, delivering ~11–12 Nm of torque with encoder feedback (UTOPI / incremental typical) and a totally enclosed, self-cooled enclosure. The motor mounts by flange, uses a ~1-3/8 inch shaft (application dependent), and is built for continuous duty in industrial environments such as CNC machining centers, heavy-duty conveyors, packaging lines, and robotic applications where consistent torque and accurate positioning are essential. Common replacements include Yaskawa SGMPH-20A1A-YR11, Yaskawa SGMGH-20ACA6B, and Yaskawa SGMGV-20D3A6H.