The Mitsubishi HC-KFS23K-S49 is a high-performance low-inertia AC servo motor from the MELSERVO-J4 series. With a rated power of 200W and rated speed of 3000 rpm, it is designed for applications requiring high-speed response, precision positioning, and compact dimensions. The motor is suitable for a wide range of industrial automation equipment, including CNC machine tools, robotics, packaging machinery, and electronic assembly systems.
Series: MELSERVO-J4 series
Rated Power: 200 W
Rated Torque: 0.64 N·m
Maximum Torque: 1.92 N·m (3 × rated, 3 seconds)
Rated Speed: 3000 rpm
Maximum Speed: 3600 rpm (instantaneous)
Speed Range: 5-3000 rpm (continuous)
Encoder Type: 17-bit absolute encoder (131072 pulses/revolution)
Rotor Inertia: Low-inertia design for high acceleration
Control Modes: Position control, speed control, torque control
Protection Rating: IP65 (dust-tight and water-jet resistant)
Shaft Type: Keyed shaft for positive load coupling
Compatible Drives: MR-J4 series servo amplifiers
Communication: Pulse command and bus control (SSCNET III/H)
Operating Temperature: 0°C to +40°C
Storage Temperature: -15°C to +70°C
Weight: Approximately 0.6 kg

The HC-KFS23K-S49 features a low-inertia rotor design that enables rapid acceleration and deceleration, making it ideal for applications requiring frequent start-stop cycles and high throughput. The 17-bit absolute encoder provides 131,072 pulses per revolution of position feedback, eliminating the need for a homing sequence at power-up. The encoder supports multi-turn counting, allowing the motor to retain absolute position information even when power is removed.
With a maximum torque of 1.92 Nm (three times the rated torque), the motor can handle momentary overloads during acceleration and high-load conditions. The 3000 rpm rated speed and 3600 rpm maximum speed provide ample operating range for high-speed positioning tasks. When paired with an MR-J4 series servo amplifier, the motor supports both pulse train command and SSCNET III/H high-speed network communication for multi-axis synchronized control.
The HC-KFS23K-S49 is used in CNC routers and milling machines, pick-and-place robots, automated assembly equipment, packaging and labeling machines, semiconductor manufacturing equipment, and medical device positioning systems. Its compact size and IP65 protection make it suitable for installation in dusty or wash-down environments.



