MITSUBISHI
HG-KR73 750W AC Servo Motor 22-Bit Encoder 80mm Flange | Mitsubishi Electric
HG-KR73 750W AC Servo Motor 22-Bit Encoder 80mm Flange | Mitsubishi Electric
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The Original New Mitsubishi Electric HG-KR73 is a low-inertia, small-capacity AC brushless rotary servo motor from the MELSERVO-J4 series, designed for high-speed, high-precision positioning applications. Rated output 750 W (0.75 kW) at 200 V AC class with 3000 rpm rated speed and 2.4 N·m rated torque. Featuring a built-in 22-bit absolute feedback encoder (4,194,304 pulses/revolution) for precise position detection without battery-backed homing routines. The straight shaft design and compact 80×80 mm flange mounting enable integration into space-constrained machinery. Natural cooling, IP65 protection, and a 4-pin rectangular connector complete the package.
Core Engineering Highlights:
750 W (0.75 kW) rated output | 2.4 N·m rated torque / 8.4 N·m maximum torque | 3000 rpm rated / 6000 rpm maximum speed | 22-bit absolute encoder (4,194,304 ppr) | Rated current 4.8 A / 17 A maximum | 80×80 mm flange mounting | IP65 protection | 0°C to +40°C ambient temperature
Key Features:
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Original New Mitsubishi Electric HG-KR73 servo motor
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Low-inertia, small-capacity design for high-frequency positioning
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Built-in 22-bit absolute feedback encoder eliminates homing at power-up
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Straight shaft (without key) for direct coupling
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Natural cooling (fanless) for reduced maintenance
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4-pin rectangular connector for encoder feedback
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Moment of inertia: 1.26 kg·cm² (0.000126 kg·m²)
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Maximum radial load: 392 N / Maximum axial load: 147 N
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Storage temperature: –15°C to +70°C
Applications:
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High-speed pick-and-place and assembly automation
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Semiconductor manufacturing and electronic component handling
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Packaging machinery (form-fill-seal, labeling)
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CNC machine tools and precision machining
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SCARA robots and robotic arms
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Inspection and testing equipment
Technical Specifications:
| Attribute | Specification |
|---|---|
| Catalog Number | HG-KR73 |
| Product Family | MELSERVO J4 - HG-KR Series |
| Motor Type | AC brushless rotary servo motor |
| Rated Output | 750 W (0.75 kW) |
| Rated Torque | 2.4 N·m |
| Maximum Torque | 8.4 N·m |
| Rated Current | 4.8 A |
| Maximum Current | 17 A |
| Supply Voltage | 200 V AC class |
| Rated Rotational Speed | 3000 rpm |
| Maximum Rotational Speed | 6000 rpm |
| Encoder Type | 22-bit absolute (4,194,304 ppr) |
| Shaft Type | Straight shaft (without key) |
| Moment of Inertia | 0.000126 kg·m² (1.26 kg·cm²) |
| Flange Mounting | 80 × 80 mm |
| Connection Type | 4-pin rectangular connector |
| Cooling Method | Natural cooling (fanless) |
| Protection Rating | IP65 |
| Maximum Radial Load | 392 N |
| Maximum Axial Load | 147 N |
| Dimensions (H × W × D) | 97.1 × 80 × 152 mm |
| Operating Temperature | 0°C to +40°C |
| Storage Temperature | –15°C to +70°C |
| Certifications | CE, TUV Rheinland, cULus, UL, KC, EAC |
System Compatibility:
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Compatible with Mitsubishi Electric MELSERVO-J4 series servo amplifiers
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Recommended 1-axis amplifiers: MR-J4-70GF, MR-J4-70GF-RJ, MR-J4-70B, MR-J4-70B-RJ, MR-J4-70A, MR-J4-70A-RJ
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For absolute position retention during power-off, install an MR-BAT6V1SET battery backup unit
Related Products:
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MR-J4-70B – 750 W servo amplifier, SSCNET III/H interface
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MR-J4-70A – 750 W servo amplifier, pulse train interface
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MR-J4-70GF – 750 W servo amplifier, fully closed loop control
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MR-J4W2-1010B – 2-axis servo amplifier
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MR-J3ENCBL2M-A1-L – Encoder cable, 2 m (standard bending life)
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MR-PWS1CBL2M-A1 – Power cable, 2 m
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MR-BAT6V1SET – Battery for absolute encoder
PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Mitsubishi Electric and MELSERVO are trademarks of Mitsubishi Electric Corporation.
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