HC-KFS43 MITSUBISHI Industrial Servo Drives 120 / 240 VAC 50/60hz 750W
HC-KFS43 Description
The HC-KFS43 is a high-performance, low-inertia brushless AC servo motor from Mitsubishi Electric’s MELSERVO J2S series, designed for precision motion control in compact industrial automation systems. It delivers a rated output of 0.4 kW (400W) with a rated torque of 1.3 Nm and a rated speed of 3000 rpm, optimized for fast acceleration/deceleration and high-precision positioning. Equipped with a built-in 17-bit absolute encoder (131,072 ppr) for zero-homing feedback, it supports direct connection to MR-J2S series servo amplifiers (MR-J2S-40A/B) via SSCNET high-speed serial communication. The motor features a standard straight shaft, 60×60 mm flange mounting, IP55 protection (excluding shaft/connector), and natural cooling, making it ideal for space-constrained, high-dynamic applications requiring rapid response and accurate motion control.
HC-KFS43 Key Features
- Ultra-Low Inertia Design: Moment of inertia of only 0.000046 kg·m², enabling extremely fast acceleration/deceleration and high-speed positioning (max speed 4500 rpm).
- High-Resolution Absolute Encoder: 17-bit (131,072 pulses/rev) absolute encoder provides precise position feedback, eliminating homing procedures and ensuring absolute position retention after power loss.
- High Torque Density: Rated torque 1.3 Nm, peak torque 3.8 Nm, delivering strong dynamic performance for high-load, high-speed motion tasks.
- Compact & Standardized: 60×60 mm standard flange, straight shaft, lightweight (1.45 kg), easy integration into robots, conveyors, and small machine tools.
- Robust Industrial Protection: IP55 ingress protection (dust-tight, protected against low-pressure water jets), Class B insulation, and wide environmental tolerance for harsh factory conditions.
- Seamless Amplifier Compatibility: Directly compatible with Mitsubishi MR-J2S-40A/B servo amplifiers, supporting SSCNET high-speed serial communication for synchronized multi-axis control.
- Maintenance-Free Operation: Brushless design eliminates wear parts; no electromagnetic brake (standard), suitable for non-emergency stop applications.
- Global Compliance: Certified to CE, UL/cUL, and RoHS for worldwide industrial deployment.
HC-KFS43 Materials & Applications
Materials
- Housing & Frame: High-strength die-cast aluminum alloy, corrosion-resistant, with black industrial coating for heat dissipation and durability.
- Stator/Rotor: High-grade silicon steel laminations, high-temperature-resistant copper windings (Class B insulation, 130°C), and high-performance neodymium permanent magnets for high torque efficiency.
- Shaft: Precision-ground carbon steel, straight standard shaft (φ14 mm), hardened for wear resistance and reliable coupling with gears/belts.
- Encoder: Integrated 17-bit absolute optical encoder with sealed housing, protected from dust and vibration.
- Connector & Cable Interface: Industrial-grade multi-pin connector, IP55-rated, for power and encoder signal transmission.
- Bearings: High-precision sealed ball bearings, lubricated for long life, supporting high-speed operation up to 4500 rpm.
Typical Applications
- Industrial Robotics: Small articulated robots, SCARA robots, and collaborative robot arms for fast, precise pick-and-place and assembly.
- Machine Tools: CNC lathe/mill feed axes, grinding machines, and small cutting machines for high-precision positioning.
- Packaging & Printing: Labeling machines, packaging lines, printing presses, and web handling systems for high-speed motion.
- Semiconductor & Electronics: Chip handling, PCB assembly, and testing equipment requiring ultra-precise motion.
- Automation Lines: Conveyors, X-Y positioning tables, sorting machines, and textile/embroidery machinery.
- Food & Beverage: Filling, capping, and packaging equipment for hygienic, high-speed production.
HC-KFS43 Important Parameters
| Parameter |
Specification |
| Part Number |
HC-KFS43 |
| Product Series |
MELSERVO J2S Series (HC-KF Low-Inertia Line) |
| Motor Type |
3-Phase Brushless AC Servo Motor |
| Rated Output Power |
0.4 kW (400W) |
| Rated Torque |
1.3 Nm |
| Peak Torque |
3.8 Nm |
| Rated Speed |
3000 rpm |
| Maximum Speed |
4500 rpm |
| Moment of Inertia |
0.000046 kg·m² (0.46 kg·cm²) |
| Encoder Type |
17-bit Absolute Encoder |
| Encoder Resolution |
131,072 pulses/rev (ppr) |
| Rated Voltage |
3-Phase AC 129 V |
| Rated Current |
2.3 A |
| Peak Current |
6.9 A |
| Insulation Class |
Class B (130°C) |
| Protection Rating |
IP55 (excluding shaft & connector) |
| Cooling Method |
Natural Cooling (Self-cooling) |
| Shaft Type |
Standard Straight Shaft (φ14 mm) |
| Mounting Flange |
60 × 60 mm Standard Flange |
| Weight |
Approx. 1.45 kg |
| Operating Temperature |
0°C to +40°C |
| Storage Temperature |
-20°C to +70°C |
| Humidity |
5–95% RH (non-condensing) |
| Vibration Resistance |
4.9 m/s² (10–55 Hz) |
| Shock Resistance |
98 m/s² (10 G), 3 axes |
| Compatible Amplifier |
MR-J2S-40A / MR-J2S-40B |
| Electromagnetic Brake |
Not Included (Standard) |
| Status |
Legacy Model (Discontinued; Replacement: HG-KR43) |
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