The Mitsubishi MELSERVO-J4 HG-KR73BJ is a 750W low-inertia AC servo motor with an electromagnetic brake, engineered for high-speed, high-precision motion control in demanding industrial automation systems. Part of the renowned HG-KR series, this motor excels in applications requiring rapid acceleration and deceleration, such as robotics, CNC machinery, and assembly lines. Its integrated brake ensures safe holding in vertical or emergency-stop scenarios, while the J4 series compatibility with MR-J4 drives provides seamless integration and advanced tuning capabilities. With a rated torque of 2.4 N·m and a maximum torque of 8.4 N·m, the HG-KR73BJ delivers superior dynamic performance at a rated speed of 3000 r/min, peaking at 6000 r/min. The motor's robust construction, including a 40 mm shaft length (L) and radial load capacity of 392 N, ensures long-term reliability under heavy loads. Weighing only 2.8 kg, it offers a high power-to-weight ratio, making it an ideal choice for compact, high-throughput automation cells.
| Parameter |
HG-KR73BJ (750W with Brake) |
| Rated Output |
0.75 kW |
| Rated Torque |
2.4 N·m |
| Maximum Torque |
8.4 N·m |
| Rated Speed |
3000 r/min |
| Maximum Speed |
6000 r/min |
| Instantaneous Permissible Speed |
6900 r/min |
| Power Rate at Continuous Rated Torque |
45.2 kW/s |
| Rated Current |
4.8 A |
| Maximum Current |
17 A |
| Ambient Temperature (Operation) |
0 °C to 40 °C (non-freezing) |
| Ambient Temperature (Storage) |
-15 °C to 70 °C (non-freezing) |
| Ambient Humidity (Operation) |
10 %RH to 80 %RH (non-condensing) |
| Ambient Humidity (Storage) |
10 %RH to 90 %RH (non-condensing) |
| Shaft Permissible Load (L) |
40 mm |
| Shaft Radial Load |
392 N |
| Shaft Thrust Load |
147 N |
| Mass (Standard) |
2.8 kg |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22