Mitsubishi Electric HG-SR202J HG-SR Series AC Servo Motor

Description

Integrating directly into the MELSERVO-J4 motion control architecture, the Mitsubishi Electric HG-SR202J provides precision rotary control for heavy-duty industrial positioning systems. This medium-inertia AC Servo Motor delivers a rated output of 2.0 kW, operating at a rated speed of 2000 r/min. Designed with an integrated oil seal (indicated by the J suffix), it provides reliable performance in environments where exposure to machine lubricants is common, safeguarding internal windings and bearings from ingress.

Key Features

• High Torque Capabilities: Generates up to 18.6 N-m of maximum torque for demanding dynamic acceleration phases.
• Integrated Oil Seal: Special J-spec oil seal prevents fluid ingress at the shaft entry point.
• Medium Inertia Design: Optimized rotor inertia ratio ensures stable control of mechanical loads with high fluctuation rates.
• Industrial Durability: Rated for Class 155 (F) insulation to withstand prolonged thermal loads in enclosed machine environments.

Applications

• Multi-axis CNC machining centers and metal forming machinery.
• Automated materials handling, packaging lines, and heavy-duty gantry systems.
• Industrial robot joints and continuous positioning turntables.

Technical Specifications

Alternative Models & Compatibility

The HG-SR202J model serves as the drop-in oil-sealed counterpart to the standard HG-SR202. While mechanically compatible in mounting layout, the J-variant features a specialized shaft faceplate to accommodate the sealing lip. This motor is natively matched with the MR-J4-200A and MR-J4-200B servo amplifiers; running it with under-rated drive stages will trigger fault alarms and limit torque output.

Application Pitfalls & Engineering Notes

To guarantee optimal heat dissipation, this motor must be mounted on a high-thermal-conductivity metal framework (equivalent to an aluminum heat sink of at least 300mm x 300mm x 12mm). In enclosed, unventilated compartments, monitor temperature rise carefully; the Class 155 (F) insulation protects the windings, but excessive heat can degrade bearing grease and compromise the long-term effectiveness of the physical oil seal.

Commissioning & Wiring Tips

Avoid dry-running the motor at high speeds during initial commissioning. The integrated oil seal lip requires a small amount of lubrication to prevent thermal friction wear; ensure a thin layer of compatible synthetic lubricant is applied. Separate the encoder feed from main power conductors by at least 100mm to prevent electromagnetic noise induction, and always verify that the grounding terminal is bonded directly to the main system chassis.

Installation Guidelines