Mitsubishi M80 Servo Motor 200V HG303

The Mitsubishi HG303 is a legacy designation in the HG series AC servo motor family, found in some older Mitsubishi CNC systems (mainly early MDS-E generation machines).

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🔧 HG303 Servo Motor Overview

• Series: Mitsubishi HG AC servo motor family
• Type: High-power CNC feed-axis servo motor (legacy naming)
• Power class: ~3.0 kW class (approx.)
• Use case: Heavy-duty CNC axis control in older machine tools

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⚙️ Key Characteristics (typical HG303 class)

HG303 is not part of the commonly used modern naming (HG354, HG224, etc.), but generally corresponds to:

• Large frame AC servo motor
• High torque output for heavy cutting loads
• 200V AC servo system
• High-resolution encoder feedback for CNC closed-loop control
• Designed for rigidity and stable machining under load

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🏭 Typical Applications

• Older CNC machining centers
• Heavy milling machines
• Large feed axes (X/Y/Z)
• Turning centers with high cutting forces
• Legacy Mitsubishi CNC systems using early MDS-E drives

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📊 Position in HG family

HG303 sits in the upper legacy torque class:

• Close to modern HG354 (3.5 kW class)
• Stronger than HG224 / HG204 / HG154 motors
• Used in machines requiring high cutting force and high inertia handling

👉 In practice:

• HG303 is often replaced by HG354 or equivalent modern high-torque HG motor, depending on machine tuning and mounting

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📌 Simple Meaning

HG303 =

Legacy Mitsubishi HG-series ~3.0 kW AC servo motor used in older CNC systems for heavy-duty feed-axis control.