Mitsubishi M80 Tool Spindle Motor HG354-D48

🔧 Mitsubishi HG354-D48 / HG354S-D48 – Description

The HG354-D48 (HG354S-D48) is a high-power Mitsubishi Electric HG Series AC servo motor, belonging to the HG350 class, used in CNC machine tool feed axes and heavy industrial motion systems.

It is designed for high torque, stable low-speed cutting performance, and heavy axis load handling in machining centers.

⚙️ Key Description

• Series: Mitsubishi HG (MELSERVO / CNC servo family)
• 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-duty machining centers, industrial automation
• Voltage class: 200 VAC servo system

📊 Electrical & Performance Specs

From Mitsubishi official HG-series data:

• Rated output: 3.5 kW
• Rated torque: 11.1 N·m
• Rated speed: 3000 rpm
• Stall torque: ~22.5 N·m
• Stall current: ~22 A class
• Maximum torque (peak): up to ~75 N·m class (system dependent)

🧩 Mechanical Features

• Frame size: ~176 mm flange class (large HG frame)
• Inertia: High inertia (stable under heavy cutting load)
• Protection: IP67 (shaft excluded)
• Construction: Fully enclosed industrial servo motor
• Encoder: High-resolution absolute feedback (20-bit)

⚙️ Functional Characteristics

• Designed for heavy CNC axis control (NOT spindle rotation)
• Optimized for:
  • High cutting force resistance
  • Stable torque at low speed
  • Heavy ball-screw driven axes
• Works with Mitsubishi MDS / MR-J servo drive systems

🏭 Typical Applications

The HG354-D48 is commonly used in:

• Large CNC machining centers (heavy feed axes)
• Milling and boring machines
• Heavy-duty metal cutting equipment
• Industrial automation with high load inertia
• Large ball-screw or gearbox-driven axis systems

⚠️ Important Note

• ❌ Not a spindle motor (SJ series is spindle-specific)
• ❌ Not a linear motor (LM series is direct-drive linear system)
• ✅ It is a high-torque rotary servo motor for CNC axis motion