Mitsubishi HG-KN43JK 400W 200V AC Low-Inertia Servo Motor with Keyway Shaft and Oil Seal

The Mitsubishi HG-KN43JK is a low-inertia, small-capacity servo motor designed for Mitsubishi's MELSERVO-JE motion-control platform. With a rated output of 0.4 kW, it delivers 1.3 N·m rated torque and up to 3.8 N·m maximum torque. Its 3,000 r/min rated speed and 5,000 r/min maximum speed provide a suitable combination of speed and torque for compact automated machinery and precision rotary motion applications.

The HG-KN43JK incorporates a 17-bit feedback encoder, providing 131,072 pulses per revolution for closed-loop servo control. The K designation indicates a keyway shaft, while the J designation specifies the oil-seal configuration. The motor uses a totally enclosed, natural-cooling structure and has an IP65 protection rating, excluding the shaft-through portion. Its standard configuration does not include an electromagnetic brake.

With its compact construction, low inertia and responsive characteristics, the HG-KN43JK can be used in industrial automation, positioning equipment, assembly machinery, material-handling systems and other motion-control applications. Mitsubishi specifies the HG-KN43 motor with the MR-JE-40A/B/C servo amplifier family, although the complete motor-drive combination should always be verified against the machine requirements and Mitsubishi's compatibility specifications before replacement or installation.