Mitsubishi HG-KR73K Brushless AC Rotary Servo Motor for MELSERVO-J4

The Mitsubishi HG-KR73K (HG-KR73K) is a high-performance brushless AC rotary servo motor engineered for use with Mitsubishi Electric MELSERVO-J4 series drive systems. Operating on a 400 VAC power supply class, this industrial servo motor delivers a rated output of 7,000 W (7 kW) with a rated torque of 22.3 Nm and a rated speed of 3,000 r/min. It is equipped with a straight shaft, an integrated electromagnetic holding brake, and an oil seal, providing reliable torque retention and shaft sealing in demanding automation environments. Feedback is managed via an integrated 22-bit absolute rotary encoder providing 4,194,304 pulses per revolution for ultra-precise positioning. Built with a standard 176x176 mm mounting flange and dual MS-type connectors, the motor features an IP67-rated enclosure suitable for harsh industrial conditions. Rated for ambient operating temperatures from 0 to +40 degrees Celsius with a rated current of 17 A, this motor provides functional equivalence to the HGJR7034B unit. It is typically applied in heavy-duty automated machinery, robotics, and industrial motion control applications requiring robust holding torque and precise dynamic positioning.