Mitsubishi HG-KR73B 750W Low Inertia Servo Motor with Built-in Brake for High-Precision Automation
The HG‑KR73B is a compact, low‑inertia Mitsubishi servo motor designed for high‑precision and high‑response automation applications. It delivers 750W rated power with 2.4 Nm rated torque and a 3000 rpm maximum speed, supported by a 22‑bit absolute encoder for accurate positioning. Equipped with a built‑in electromagnetic brake, it ensures safe shaft holding during power loss. The motor features IP65 protection, low inertia for fast acceleration, and stable performance for small‑to‑medium automated machinery. It is widely used in robotics, packaging, assembly, and material handling systems requiring reliable motion control.
Figure 1 shows the front panel of HG-KR73B.
Table 1 shows the Quick Specs
| Item | Value |
|---|---|
| Model | HG-KR73B |
| Power | 750W |
| Rated Torque | 2.4 Nm |
| Speed | 3000 rpm |
| Brake | Built‑in electromagnetic |
| Parameter | Details |
|---|---|
| Product Type | AC brushless rotary servo motor |
| Series | MELSERVO J4 / HG‑KR |
| Rated Output | 750 W / 0.75 kW |
| Rated Torque | 2.4 Nm |
| Max. Torque | 8.4 Nm |
| Rated Speed | 3000 rpm |
| Encoder | 22‑bit absolute |
| Brake | Electromagnetic brake (DC24V) |
| Voltage | 200 Vac class |
| Rated Current | 4.8 A |
| Inertia | Low inertia |
| Shaft | Straight shaft |
| Protection | IP65 |
| Ambient Temperature | −10°C to +40°C |
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