Fanuc ai Spindle Amplifier 400VAC-input A06B-6121-H075

The part number A06B-6121-H075 is a spindle amplifier module from FANUC, specifically designed for CNC machine spindle control.

---

🔧 Description

• Type: Spindle Amplifier Module (Spindle Drive)
• Series: FANUC αi (Alpha i) Spindle Amplifier Series
• Model: SPM-75HVi
• Application: Controls the spindle motor in CNC machines (not axis motors like servo amps)

---

⚙️ Key Function

• Converts CNC controller signals into power for the spindle motor
• Controls:
  • Spindle speed (RPM)
  • Torque
  • Acceleration / deceleration
• Ensures smooth, high-speed machining operations

---

📊 Technical Highlights

• Input Voltage: approx. 565–679 V AC
• Output Voltage: up to ~480 V
• Output Current: ~170 A
• Power Rating: around 82 kW
• Type: High-voltage spindle drive (400V class)

---

🧩 Features

• High-speed, high-torque spindle control
• Fast acceleration/deceleration for reduced cycle time
• Integrated cooling (internal + external fans)
• LED display for diagnostics and alarms
• Designed for heavy-duty machining (milling, turning, drilling)

---

🏭 Typical Use

Installed in CNC machines such as:

• Machining centers
• CNC lathes
• Grinding machines

It works alongside:

• FANUC CNC controller (0i, 30i, etc.)
• FANUC αi spindle motors

---

🔁 Important Note

• Variants like H550 / H553 / H570 indicate different versions or configurations (software/hardware differences), and they may not be interchangeable without verification