Mitsubishi HG-KR73J Industrial Servo Motor 3000 r/min.0.75 kW 6000 r/min
HG-KR73J Description
The HG-KR73J is a high-performance, low-inertia brushless AC rotary servo motor from Mitsubishi Electric’s MELSERVO-J4 series, designed for precision motion control in compact industrial automation systems. With a rated output of 0.75 kW (750W), it delivers smooth, high-speed operation and precise positioning, paired with a built-in 22-bit absolute encoder (4,194,304 pulses/rev) for zero-homing position feedback. This 200V-class motor features a straight shaft, IP65 environmental protection (shaft side), natural air cooling, and an 80×80mm standard flange mount, making it ideal for high-dynamic, high-accuracy applications requiring fast acceleration/deceleration and tight positioning control. It is fully compatible with Mitsubishi MR-J4 series servo amplifiers, enabling seamless integration into advanced motion control architectures.
HG-KR73J Key Features
- Low-Inertia High-Dynamic Design: Ultra-low rotor inertia (0.000126 kg·m²) for exceptional acceleration/deceleration performance, ideal for high-speed, high-cycle motion tasks.
- 22-Bit Absolute Encoder: Built-in high-resolution absolute position encoder (4,194,304 ppr) eliminates homing on power-up, ensures accurate positioning and reduces setup time.
- High Torque & Speed: Rated torque 2.4 Nm, maximum peak torque 8.4 Nm (350% of rated); rated speed 3000 rpm, maximum speed 6000 rpm for wide operating range.
- Superior Environmental Protection: IP65 rating (shaft extension) with integrated oil seal, resistant to dust, oil mist, and moisture for harsh factory environments.
- Natural Cooling & Compact Size: Maintenance-free natural air cooling; slim 80×80mm flange design saves panel space, suitable for compact machinery.
- High Compatibility: Fully matched with Mitsubishi MR-J4 series servo amplifiers, supports advanced control functions (tuning, vibration suppression, torque control).
- Reliable Construction: Robust mechanical design, high shock/vibration resistance, long service life with no brush wear (brushless design).
- Standardized Interface: 4-pin rectangular power/encoder connectors for quick, secure wiring and installation.
- Global Certifications: CE, UL, and RoHS compliant for worldwide industrial deployment.
HG-KR73J Materials & Applications
Materials
- Stator & Rotor Core: High-grade silicon steel laminations, optimized for low iron loss, high magnetic efficiency, and smooth torque output.
- Rotor Magnets: High-performance neodymium-iron-boron (NdFeB) permanent magnets, delivering high flux density and stable torque across speed ranges.
- Housing & Flange: Die-cast aluminum alloy, lightweight, high thermal conductivity for efficient natural heat dissipation, corrosion-resistant.
- Shaft: High-strength hardened alloy steel, precision ground for straightness and concentricity, with integrated oil seal for IP65 protection.
- Bearings: High-precision, low-friction industrial ball bearings, designed for high-speed operation and long service life.
- Internal Wiring & Encoder: High-temperature-resistant insulated wiring; 22-bit absolute optical encoder with sealed housing for dust/moisture resistance.
- Connector: Industrial-grade plastic and metal connectors, IP65-rated, secure connection for power and feedback signals.
Typical Applications
- Packaging Machinery: Labeling, filling, sealing, and cartoning machines requiring high-speed, precise positioning.
- Semiconductor & Electronics: Pick-and-place machines, PCB assembly, wire bonding, and precision testing equipment.
- Machine Tools: Small CNC machines, engravers, grinders, and linear motion axes for high-precision machining.
- Robotics & Automation: Collaborative robots, SCARA robots, and articulated arm axes for fast, accurate movement.
- Printing & Textile: High-speed printing presses, winding machines, and textile processing equipment.
- Food & Beverage: Sorting, conveying, and packaging lines with strict hygiene and speed requirements.
- General Industrial Automation: Conveyors, actuators, assembly lines, and positioning stages requiring dynamic motion control.
HG-KR73J Important Parameters
| Parameter |
Specification |
| Part Number |
HG-KR73J |
| Brand |
Mitsubishi Electric (MELSERVO-J4 Series, HG-KR Low-Inertia Line) |
| Motor Type |
Brushless AC Rotary Servo Motor |
| Rated Output Power |
0.75 kW (750 W) |
| Rated Torque |
2.4 Nm |
| Maximum Peak Torque |
8.4 Nm (350% of rated torque) |
| Rated Speed |
3000 rpm |
| Maximum Speed |
6000 rpm |
| Rotor Moment of Inertia |
0.000126 kg·m² (1.26 kg·cm²) |
| Encoder Type |
22-bit Absolute Position Encoder |
| Encoder Resolution |
4,194,304 pulses/rev (ppr) |
| Power Supply |
3-phase AC 200 V (±10%) |
| Rated Current |
4.8 A |
| Maximum Current |
14.7 A |
| Insulation Class |
B Class |
| Protection Rating |
IP65 (shaft extension); IP40 (body) |
| Cooling Method |
Natural Air Cooling |
| Shaft Type |
Straight Shaft (No Brake, With Oil Seal) |
| Mounting Flange |
80 × 80 mm Standard Square Flange |
| Ambient Operating Temperature |
0°C to +40°C |
| Storage Temperature |
-20°C to +85°C |
| Humidity |
5–95% RH (Non-Condensing) |
| Vibration Resistance |
4.9 m/s² (0.5 G) |
| Shock Resistance |
98 m/s² (10 G) |
| Dimensions (W×H×D) |
80 × 97.1 × 152 mm |
| Weight |
Approx. 1.8 kg |
| Certifications |
CE, UL, RoHS |
| Compatible Amplifiers |
Mitsubishi MR-J4 Series (MR-J4-70A / MR-J4-70B) |
Frequently Asked Questions:
1. Q: Do you provide warranty for the goods?
A: Yes, we provide warranty for all the goods from us.We offer one year warranty for New items,6 months warranty for Used items.
2. Q: Could you provide technology support?
A: We're in this field many year. If there's any problem, please contact with us,we'll provide suggestion from our engineer to help you solve problem.
3. Q: Do you keep goods in stock or only trading?
A: We have large warehouse for goods and keeping lots of goods in warehouse, so we could delivery the items in short lead time.
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