Yaskawa Electric Corporation SGDG-04GT Servo Drive

The Yaskawa SGDG-04GT servo drive is a digital servo amplifier in the Legend SGDG family that regulates torque and motion in precision automation systems. It accepts 90–253 VAC input from a single phase and delivers 0.4 kW (400 W) to compatible servo motors in the 100–750 W range, with three-phase motor output and torque-control operation for stable, repeatable motion. Designed for CNC machines, robotics, packaging equipment, and automated assembly lines, it supports encoder feedback and natural air cooling to maintain reliable performance in demanding environments. Weighing approximately 2.27 kg (5 lb), this drive is suitable for 50/60 Hz systems and applications requiring accurate torque control and responsive motor behavior. Common replacements include the Yaskawa SGDS-04A12A and Yaskawa SGDM-04ADA, reflecting the SGDG series’ retrofit and legacy-system compatibility.