Mitsubishi HG-KR053 50W 200V AC Low-Inertia Servo Motor with 22-Bit Encoder

The Mitsubishi HG-KR053 is a compact, low-inertia servo motor belonging to the MELSERVO-J4 servo system. With a rated output of 0.05 kW (50 W), it delivers 0.16 N·m rated torque and 0.56 N·m maximum torque. Its rated speed is 3,000 r/min and maximum speed is 6,000 r/min, making it suitable for small-capacity motion-control applications requiring responsive and accurately controlled rotary movement.

A key feature of the HG-KR053 is its 22-bit absolute/incremental encoder, which provides a resolution of 4,194,304 pulses per revolution. The motor has a straight shaft and a totally enclosed, natural-cooling structure with an IP65 protection rating, excluding the shaft-through portion. Mitsubishi specifies a moment of inertia of 0.045 × 10⁻⁴ kg·m², supporting the low-inertia characteristics of the HG-KR series.

The HG-KR053 is intended for general industrial machinery, particularly equipment where compact size, high-resolution feedback and precise positioning are important. Mitsubishi gives examples including X-Y tables and semiconductor manufacturing equipment, while the motor can also be applied to other compatible automated machinery and positioning systems. When selecting it as a replacement, the exact motor model and compatible MELSERVO-J4 servo amplifier should be verified against the existing machine configuration.