Mitsubishi M80 Tool Spindle Motor HG204-D48

🔧 Mitsubishi HG204-D48 (HG204S-D48) – Description

The HG204-D48 / HG204S-D48 is a high-power Mitsubishi Electric HG Series AC servo motor, used in CNC machine tool feed axes (heavy-duty motion systems).

It belongs to the HG200 class, designed for high torque and strong axis thrust capability, typically used on large machining centers and heavy cutting applications.

⚙️ Key Description

• Series: Mitsubishi HG (MELSERVO / CNC servo system)
• Type: AC brushless rotary servo motor
• Encoder: 20-bit absolute encoder (D48 type, ~1,048,576 pulses/rev)
• Application: CNC feed axes (X/Y/Z), heavy industrial automation, machine tools
• Voltage class: 200 VAC servo system (MELSERVO-J4 / MDS compatible systems)

📊 Electrical & Performance Specs (HG204 class)

From Mitsubishi HG-series specification tables:

• Rated output: 2.0 kW
• Rated torque: 6.4 N·m
• Rated speed: 3000 rpm
• Maximum torque (stall): ~13.7 N·m
• Stall current: ~15 A class

🧩 Mechanical Features

• Frame size: ~130 mm class (large HG frame)
• Inertia: Medium–high inertia (stable under heavy cutting load)
• Protection: IP67 (shaft excluded)
• Structure: Fully enclosed industrial servo motor
• Mounting: CNC flange type for ball-screw / feed axis systems

⚙️ Functional Characteristics

• Designed for high-load CNC axis control (NOT spindle use)
• Optimized for:
  • Heavy cutting force resistance
  • Stable torque during machining
  • High rigidity positioning systems
• Works with Mitsubishi MR-J4 / MDS servo amplifiers

🏭 Typical Applications

The HG204-D48 is commonly used in:

• CNC machining center feed axes (X, Y, Z)
• Large machining centers and heavy-duty milling machines
• Industrial automation with high load inertia
• Ball-screw driven linear axes requiring strong thrust
• Metal cutting machines with high cutting resistance

⚠️ Important Note

• ❌ Not a spindle motor (SJ series = spindle drives)
• ❌ Not a linear motor (LM series = direct-drive axis systems)
• ✅ It is a rotary servo motor for CNC axis movement

⚡ Summary

The HG204-D48 is:

• A 2.0 kW high-torque CNC servo motor
• Part of the HG200 heavy-duty axis class
• High peak torque (~13.7 N·m)
• Designed for rigid, heavy-load CNC feed axis applications