Yaskawa Electric Corporation UGRMEM-04SSA71 Servo Motor

Yaskawa Electric Corporation UGRMEM-04SSA71 is a Minertia RM Series DC servo motor designed for high-speed response and low-inertia positioning in compact motion systems. Featuring a low inertia rotor and a flange-mount design with an 11 mm shaft, it is well-suited for robotics, CNC positioning, and semiconductor equipment that require rapid acceleration and precise control. The power rating sits in the 400 W–1 kW class depending on the series variant, delivering a favorable torque-to-weight ratio in a small form factor, and feedback is typically provided by tachometer or encoder units for accurate motion. This motor supports continuous duty operation and is intended for high-speed automation and robotics applications, including robotic systems, CNC machines, and semiconductor positioning tasks. Common replacements include UGRMEM-04MSA71 and SGMJV-04ADA21 to facilitate retrofit or substitution of legacy Minertia units.