Mitsubishi M80 Tool Spindle Motor HG104-D48

🔧 Mitsubishi HG104-D48 – Description

The HG104-D48 (HG104S-D48 / HG104BS-D48 variants) is a Mitsubishi Electric HG Series AC servo motor, used in CNC machine tool feed axes and medium-power industrial automation systems.

It is part of the HG100-class servo family, designed for higher torque than HG75/HG105 class motors while still maintaining fast dynamic response and precision positioning.

⚙️ 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), automation systems, industrial positioning

📊 Electrical & Performance Specs

From Mitsubishi HG-series official specifications:

• Rated output: 1.0 kW
• Rated torque: 3.2 N·m
• Rated speed: 3000 rpm
• Maximum speed: ~4000–5000 rpm (variant dependent)
• Stall torque: ~5.9 N·m (HG104 class reference)
• Stall current: ~6.6 A class

🧩 Mechanical Features

• Frame size: ~100 mm class flange motor
• Structure: Medium inertia servo (more stable under load than HG75/HG105)
• Protection: IP67 (shaft excluded)
• Encoder type: High-resolution absolute feedback system (20-bit)
• Mounting: Standard CNC servo flange for ball-screw axes

⚙️ Functional Characteristics

• Designed for precise CNC axis motion control
• Optimized for:
  • Stable torque under cutting load on feed axes
  • Smooth interpolation in CNC machining
  • Medium-load positioning systems
• Works with Mitsubishi MR-J4 / MDS servo amplifiers

🏭 Typical Applications

The HG104-D48 is commonly used in:

• CNC machining center feed axes (X, Y, Z)
• Medium-duty ball screw drives
• Industrial automation machines
• Positioning tables and handling systems
• Light-to-medium robotics

⚠️ Important Note

• ❌ Not a spindle motor (SJ series = spindle drive)
• ❌ Not a linear motor (LM series = direct-drive axis)
• ✅ It is a rotary servo axis motor for motion control

⚡ Summary

The HG104-D48 is:

• A 1.0 kW Mitsubishi CNC servo motor
• Medium-frame HG100 class
• High-resolution 20-bit feedback system
• Designed for reliable CNC axis movement with moderate torque and high precision