Mitsubishi HG-KR73J Servo Motor – High Torque in Compact Form

Technical Specifications

• Brand: Mitsubishi Electric | Model: HG-KR73J | Type: Low inertia / Small capacity servo motor
• Rated Output Power: 0.75 kW – ideal for higher-power automation tasks
• Rated Torque: 2.4 Nm; Maximum Torque: 8.4 Nm for demanding acceleration
• Rated Speed: 3000 rpm; Maximum Speed: 6000 rpm ensures fast and responsive operation
• Rated Current: 4.8 A; Peak Current: 17 A for high-performance cycles
• Power Supply: 200V AC – standard industrial voltage requirement
• Encoder Type: 22-bit high-resolution encoder; Resolution: 4,194,304 pulses per revolution
• Enclosure Rating: IP65 – dust-tight and resistant to water jets
• Temperature Range: 0 to 40 °C operating; -15 to 70 °C storage (non-freezing)
• Shaft Type: Standard straight shaft with integrated oil seal
• Weight: 11.00 lbs (4.99 kg) – robust construction for demanding environments
• Note: This model does not include an electromagnetic brake or thermistor

Key Features & Benefits

• High Torque Output: The HG-KR73J delivers 8.4 Nm peak torque for heavy-duty applications
• 22-Bit High-Resolution Encoder: Provides exceptional positioning accuracy with 4,194,304 pulses per revolution
• IP65 Protection: Resists dust, water jets, and oil ingress for harsh industrial environments
• Low Inertia Design: Enables rapid acceleration and deceleration for high-speed automation
• Built-in Oil Seal: Extends motor longevity by preventing oil and debris contamination
• Standard Shaft Configuration: Simplifies integration with existing mechanical systems

Performance Characteristics

• Torque Capability: Smooth torque control from 2.4 Nm rated to 8.4 Nm peak
• Speed Range: 0 to 6000 rpm with precise encoder feedback
• Encoder Resolution: 22-bit (4,194,304 ppr) for micro-positioning accuracy
• Environmental Tolerance: IP65 rated for dust, water, and oil resistance
• Thermal Management: Natural cooling with fully enclosed construction
• Noise Immunity: Robust design minimizes electromagnetic interference

Frequently Asked Questions

• Does the HG-KR73J include an electromagnetic brake?
  No, this model does not feature a brake. For holding applications, consider brake-equipped variants.
• Which servo drive works with this motor?
  Use a compatible MELSERVO series servo amplifier for optimal performance and tuning.
• What encoder does this motor use?
  The HG-KR73J features a 22-bit high-resolution encoder with 4,194,304 pulses per revolution.
• Is the IP65 rating valid in all conditions?
  IP65 protection applies when connectors are properly mated and sealed.
• What cooling does this servo motor require?
  It uses natural cooling. Ensure adequate space around the motor for air circulation.

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