The MR-J4-100A+HG-SR102J is a matched Mitsubishi servo amplifier and motor set from the MR-J4 series, combining the MR-J4-_A amplifier with an HG-SR102J medium-inertia AC servo motor. Rated output is 1.0 kW, with a rated current of 6.0 A and peak torque of 14.3 N·m at 2000 r/min. The motor includes an oil seal (J suffix), suited for applications where lubricant ingress is a concern.
The 1.0 kW rated output and 6.0 A rated current define the continuous load capability — this set drives a motor load up to that power and current without thermal overload. The 14.3 N·m peak torque handles short-duration acceleration or high-inertia starts, but continuous duty stays within the rated current. The 2000 r/min rated speed matches standard 4-pole servo applications; if your axis requires higher base speed, this isn't the variant. Sine-wave PWM control with current control method gives smooth torque at low speeds, important for positioning or tension control. The general-purpose interface (A type) supports analog or pulse-train command, making it compatible with most motion controllers without a dedicated fieldbus card.