What Is the HG-KR43J Servo Motor?
When precision motion control is critical in industrial automation, the Mitsubishi HG-KR43J servo motor delivers reliable performance. This AC brushless rotary servo motor belongs to the MELSERVO J4 series and is designed for applications requiring accurate speed, torque, and position control. With a rated output of 400 W, the HG-KR43J is suitable for low to moderate power needs in robotics, machine tools, and automated systems.
Technical Specifications Breakdown
The HG-KR43J offers a balanced set of performance parameters for dynamic control:
- Rated torque: 1.3 Nm; maximum torque reaches 4.5 Nm for short bursts.
- Rated speed: 3000 rpm; maximum speed is 6000 rpm for rapid movements.
- Rated current: 2.6 A; maximum current is 9.1 amps.
- Motor type: Low inertia/small capacity, enabling quick acceleration and deceleration.
- Maximum radial load: 245 N, supporting robust mechanical connections.
- Connection type: 4-pin rectangular connector for secure wiring.
These specifications make the HG-KR43J ideal for applications where fast response and precise positioning are essential.
Industry Applications
In robotics, the HG-KR43J provides the torque and speed needed for joint actuation and end-effector control. Its low inertia design allows rapid direction changes, improving cycle times. For machine tools, the motor drives spindles or feed axes with accuracy, reducing scrap rates. In general automation systems, it handles pick-and-place, labeling, and assembly tasks reliably.
Installation & Setup Guidance
Mount the HG-KR43J using its flange mounting option. Ensure the mounting surface is flat and rigid to minimize vibration. Connect the 4-pin rectangular connector according to the manufacturer's wiring diagram. Use natural cooling—keep the motor's enclosure free from obstructions to allow airflow. The IP65 rating makes it dust-tight and resistant to water jets, but avoid direct high-pressure spray on connectors.
Maintenance & Reliability
Routine inspection of the oil seal is recommended to prevent contamination from oil or debris. Check the shaft and connector for wear periodically. The motor's natural cooling design reduces maintenance needs compared to fan-cooled units. Operating in temperatures from 0 to 40 degrees Celsius ensures optimal performance. The absence of a reduction gear and electromagnetic brake simplifies upkeep.
Selection Guide & Purchasing Advice
Before ordering the HG-KR43J, verify your system's voltage and drive compatibility. This motor does not include a brake or gearbox—plan for external holding brakes if required. The standard shaft type suits most direct coupling applications. SpareTechPLC offers genuine Mitsubishi parts with fast shipping. Contact our team to confirm stock and lead times.
Frequently Asked Questions
Q: What is the rated power of the HG-KR43J?
A: The rated output is 400 W.
Q: Does the HG-KR43J include an electromagnetic brake?
A: No, this model has no electromagnetic brake.
Q: What is the maximum speed of this servo motor?
A: The maximum speed is 6000 rpm.
Q: Is the motor suitable for dusty environments?
A: Yes, it has an IP65 enclosure, making it dust-tight and resistant to water jets.
Q: What type of connector does the HG-KR43J use?
A: It uses a 4-pin rectangular connector.
