The MR-J4-70A+HG-KR73J is a Mitsubishi MR-J4-_A servo amplifier paired with an HG-KR73J low-inertia AC servo motor. Rated output is 0.75 kW at 3000 r/min, with a rated current of 5.8 A and maximum torque of 8.4 N·m. The motor includes an oil seal (J suffix). Control is sine-wave PWM with current control.
Fit & Ratings
The 5.8 A rated current and 8.4 N·m peak torque define the load envelope — sized for a 0.75 kW servo application on 200 V class supply (MR-J4-_A general-purpose interface). Maximum current of 17 A covers transient acceleration. The oil seal makes it suitable for applications where lubricant ingress is a concern, common in geared or direct-drive setups.