Mitsubishi M80 Spindle Drive MDS-EH-SP-480

The Mitsubishi MDS-EH-SP-480 is an ultra high-power CNC spindle drive unit (AC spindle amplifier) from the MDS-EH series, designed for very large spindle motors and heavy industrial machining systems.

🔧 Description

• Product type: CNC spindle drive / spindle amplifier
• Series: MDS-EH
• Model: MDS-EH-SP-480
• Manufacturer: Mitsubishi Electric
• Function: Controls spindle motor speed, torque, orientation, rigid tapping, and heavy cutting operations
• Application: Large CNC machining centers, gantry systems, heavy-duty lathes, and continuous production machining lines
• Control method: Sine-wave PWM vector spindle control
• Cooling: Forced-air cooling
• Protection class: IP20 (excluding terminal block)

⚙️ Main Specifications

• Drive type: 1-axis spindle amplifier
• Nominal maximum current: 480A
• Rated output current: 180A
• Rated output voltage: 323–340VAC class
• DC bus input voltage: 513–648V DC
• Rated DC input current: 150A
• Control power supply: 380–480V AC, 50/60Hz
• Approximate spindle power class: 55kW class
• Heat radiation at continuous rated output: 1720W
• Cooling method: Forced-air cooling
• Weight: Approx. 18–26kg depending on configuration/listing

🏭 Typical Applications

• Large CNC machining centers
• Heavy gantry milling systems
• Large turning centers
• High-inertia spindle systems
• Continuous-duty production machining lines
• Heavy metal cutting applications

📌 Main Features

• High-speed vector spindle control
• Rigid tapping / synchronized tapping
• Spindle orientation control
• Constant surface speed control
• High torque at low RPM
• Regenerative braking support
• High-speed optical CNC communication
• Integrated diagnostics and protection functions

📊 Position in the SP Series

• SP-20 → light spindle systems
• SP-40 → medium spindle systems
• SP-80 / SP-100 → high-power spindle systems
• SP-160 / SP-200 → very high-power spindle systems
• SP-320 → ultra heavy-duty spindle systems
• SP-480 → extreme heavy-duty industrial spindle systems
• SP-600 → maximum-capacity spindle applications

⚠️ Important Notes

• SP models are spindle amplifiers, not feed-axis servo amplifiers
• Requires Mitsubishi CNC controllers (M70 / M700 / M800 series)
• Must be paired with compatible spindle motors and encoder systems
• Designed only for industrial electrical cabinet installation
• Requires substantial cooling and proper cabinet airflow due to very high thermal dissipation