Mitsubishi HC-KFS43B Servomotor With Brake 400W

Series#: Mitsubishi

Product Details

MITSUBISHI MELSERVO-J2S SERVOMOTOR WITH BREAK 400W HC-KFS43B – High-performance AC servo motor with integrated electromagnetic brake for precise motion control.
Rated output of 400W (0.4 kW) with a compact, lightweight design ideal for space-constrained applications.
Equipped with a 17-bit absolute encoder for high-resolution position feedback and smooth low-speed operation.
Built-in brake ensures safe holding torque during power-off or emergency stops, enhancing system reliability.
Compatible with MELSERVO-J2S series servo amplifiers for seamless integration into existing automation systems.
Rugged construction with IP65 protection rating (shaft end excluded), suitable for harsh industrial environments.
100% Original product. We provide efficient, traceable, and secure global shipping solutions.

Specification

The MITSUBISHI MELSERVO-J2S SERVOMOTOR WITH BREAK 400W HC-KFS43B is a precision-engineered AC servo motor designed for demanding automation tasks requiring both high dynamic response and fail-safe operation. Part of the renowned MELSERVO-J2S family, this model features a built-in electromagnetic brake that provides reliable holding torque when power is removed, making it ideal for vertical axis applications, pick-and-place systems, and robotic arms. With a rated output of 400W and a 17-bit absolute encoder, the HC-KFS43B delivers exceptional accuracy, smooth torque at low speeds, and robust performance across a wide speed range. Its compact frame size (60 mm square) allows easy integration into tight spaces, while the IP65-rated construction (excluding shaft and connector) ensures durability in dusty or wet conditions. Backed by Mitsubishi Electric’s proven technology, this servo motor is a trusted choice for OEMs, system integrators, and end-users seeking reliable motion control solutions.

Parameter	Specification
Model Number	HC-KFS43B
Series	MELSERVO-J2S
Motor Type	AC Servo Motor with Electromagnetic Brake
Rated Output Power	400 W (0.4 kW)
Rated Torque	1.3 N·m
Peak Torque	3.8 N·m
Rated Speed	3000 r/min
Maximum Speed	4500 r/min
Encoder Type	17-bit Absolute Encoder (131072 pulses/rev)
Brake Type	Electromagnetic Spring-Applied Brake
Brake Holding Torque	2.0 N·m (minimum)
Brake Voltage	24 V DC ± 10%
Brake Current	0.3 A (at 20°C)
Power Supply Voltage	AC 200-230 V, 50/60 Hz (via compatible amplifier)
Frame Size	60 mm square (flange dimensions)
Shaft Type	Straight shaft with keyway (standard)
Shaft Diameter	14 mm
Protection Rating	IP65 (excluding shaft end and connector)
Insulation Class	Class B (130°C)
Ambient Temperature	0°C to +40°C (operation)
Ambient Humidity	20% to 80% RH (non-condensing)
Vibration Resistance	5.9 m/s² (0.6 G) at 10-55 Hz
Weight (approx.)	1.6 kg (including brake)
Compatible Amplifier	MR-J2S-40A or MR-J2S-40B (AC models)
Standard Accessories	Mounting bolts, key, O-ring, instruction manual