Mitsubishi M80 Tool Spindle Motor HG105-D48

🔧 Mitsubishi HG105-D48 – Description

The HG105-D48 (HG105S-D48) is a Mitsubishi Electric HG Series AC servo motor used in CNC machine tool feed axes and industrial automation systems. It belongs to the HG medium-inertia servo family, designed for higher torque than HG75/HG56 class motors while still maintaining fast response and precision positioning.

⚙️ Key Description

• Series: Mitsubishi HG (MELSERVO / CNC servo family)
• Type: AC brushless rotary servo motor
• Frame class: 1000 W (1.0 kW) medium-size servo
• Encoder: 20-bit absolute encoder (D48 type, ~1,048,576 pulses/rev)
• Application: CNC feed axes (X/Y/Z), automation machines, industrial positioning systems

📊 Electrical & Performance Specs

• Rated output: 1.0 kW
• Rated torque: 2.4 N·m
• Rated speed: 4000 rpm
• Maximum speed: 5000–6000 rpm (depending on drive configuration)
• Rated current: ~3.7 A
• Maximum torque: ~7–9 N·m (typical HG105 class range)

🧩 Mechanical Features

• Frame size: ~90 × 90 mm flange class
• Motor inertia: medium inertia (higher than HG75, lower than HG154)
• Protection: IP67 (shaft excluded)
• Construction: Totally enclosed, industrial-grade servo motor
• Shaft type: Straight shaft (standard coupling)

⚙️ Functional Characteristics

• Designed for CNC axis motion control (not spindle operation)
• Optimized for:
  • Stable torque under load
  • Smooth interpolation in CNC machining
  • Fast acceleration/deceleration cycles
• Works with Mitsubishi MR-J4 / MDS servo amplifiers depending on machine system

🏭 Typical Applications

The HG105-D48 is commonly used in:

• CNC machining center feed axes (X, Y, Z)
• Medium-duty industrial automation
• Robotics and handling systems
• Precision positioning tables
• Ball screw-driven motion systems

⚠️ Important Note

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

⚡ Summary

The HG105-D48 is:

• A 1.0 kW Mitsubishi CNC servo motor
• Medium inertia, balanced performance class
• High-precision 20-bit encoder feedback
• Designed for reliable CNC axis movement with moderate torque and high speed