Description
Engineered for high-dynamic positioning tasks within industrial automation architectures, the Mitsubishi Electric HG-SR352BJK AC Servo Motor delivers high torque density and exceptional rotational stability. As part of the premium MELSERVO-J4 family, this medium-inertia motor is tailored to handle high-load fluctuations and demanding duty cycles while maintaining exceptional path accuracy. Equipped with an integrated electromagnetic holding brake and a high-resolution absolute encoder, the unit ensures reliable holding torque and micro-step precision directly out of the box.
Features
-
Medium-Inertia Rotor: Optimizes feedback loop stability when handling volatile mechanical loads or high load-to-rotor inertia ratios.
-
High-Resolution Feedback: Employs a 22-bit absolute/incremental optical encoder, providing 4,194,304 pulses per revolution for smooth low-speed performance and precise positioning.
-
Built-in Electromagnetic Brake: Provides robust holding torque to prevent gravity-induced axis drop or accidental movement during de-energized states.
-
Industrial Protection: Features a fully enclosed, self-cooling structure rated at IP67, preventing liquid ingress and particulate contamination in hostile environments.
-
Integrated Keyway and Oil Seal: Shaft configuration includes a keyway with an oil seal for secure mechanical power transmission and protection against gearbox lubricant migration.
Applications
- Multi-axis gantry systems and material handling transfer lines.
- High-speed industrial packaging, wrapping, and labeling systems.
- Metalworking machine tool feed axes and positioning tables.
- Textile machinery and material winding/unwinding controls.
Technical Specifications
| Parameter |
Specification |
| Manufacturer |
Mitsubishi Electric |
| Model Number |
HG-SR352BJK |
| Series |
MELSERVO-J4 Series |
| Rated Output Capacity |
3.5 kW |
| Rated Speed |
2000 r/min |
| Voltage Class |
200V AC |
| Electromagnetic Brake |
Integrated (Brake-equipped) |
| Encoder Resolution |
22-bit Absolute/Incremental (4,194,304 pulses/rev) |
| Thermal Class |
155 (F) |
| Ingress Protection Rating |
IP67 (excluding shaft passage) |
| Ambient Operating Temperature |
0 to 40 degC (non-freezing) |
| Vibration Class |
V10 |
| Shipping Weight (Calculated) |
17.0 kg |
Empirical Engineering Insights
Alternative Models & Compatibility
The HG-SR352BJK is a drop-in replacement for equivalent legacy HC-SFS series medium-inertia motors when upgrading systems to the MR-J4 platform. When transitioning from HC series, verify parameters using MR Configurator2 to ensure the torque curves and inertia matching match your application's mechanical load profile.
Application Pitfalls & Engineering Notes
Avoid using the integrated electromagnetic brake as a dynamic braking mechanism. This component is specifically designed as a static holding brake; active deceleration using the brake will cause thermal fatigue and mechanical failure. Ensure that deceleration is handled regeneratively via the paired MR-J4-350A/B servo amplifier before engaging the brake.
Commissioning & Wiring Tips
To prevent encoder communication faults, utilize only genuine, double-shielded Mitsubishi feedback cables. The high-frequency carrier signal from the servo drive can couple noise into parallel-routed communication wires. Maintain a minimum separation of 30 cm between encoder lines and standard three-phase AC power cables.
Installation Guidelines
CRITICAL WARNING:
Ensure the parent servo amplifier is completely de-energized and its internal bus charge-discharge indicator LED is fully extinguished before connecting or disconnecting motor power, brake, or encoder cables. High residual voltages pose lethal shock risks and can instantly damage the internal 22-bit absolute encoder.
1
Mount the motor securely to a rigid, flat metal bracket to ensure adequate conduction-based heat dissipation. Ensure free-flowing air can reach the motor body.
2
Carefully align the shaft with the load coupling to minimize radial and axial forces below the specified mechanical limits. Excessive misalignment degrades the bearing lifespan.
3
Perform a standard resistance check on the motor windings (U, V, W phases to ground) and verify correct polarity before running initial test cycles in JOG mode.