Mitsubishi FK4-125-100-LP4 AC Rotary Servo Motor for MELSERVO J2S Series

The Mitsubishi FK4-125-100-LP4 (FK4-125-100-LP4) is a heavy-duty brushless AC rotary servo motor engineered for use with Mitsubishi MELSERVO J2S series drive systems. Operating on a 400 V AC supply voltage class, this high-performance servo motor delivers a rated power output of 25 kW, a rated operating current of 70 A, and a rated torque of 239 Nm at a nominal rotational speed of 1,000 r/min. It is equipped with a straight shaft configuration and an oil seal for reliable mechanical coupling in demanding industrial motion control environments. For precise closed-loop positioning and velocity tracking, the motor integrates a built-in 17-bit absolute feedback encoder delivering high resolution equivalent to 131,072 pulses per revolution. The motor features a 350 mm by 350 mm square mounting flange and provides an ingress protection rating of IP44. The FK4-125-100-LP4 delivers robust, dependable dynamic performance across high-capacity industrial automation machinery, material handling equipment, and heavy-duty manufacturing lines.