Fanuc ai Spindle Amplifier 400VAC-input A06B-6151-H075

The part number A06B-6151-H075 is a high-power spindle amplifier module from FANUC used in CNC machines.

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🔧 Description

• Type: Spindle Amplifier (AC Spindle Drive)
• Series: FANUC αi (Alpha i) Spindle Amplifier Series
• Model: AiSP-75HV (SP 75HV)
• Voltage class: 400V industrial drive system

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⚙️ Function

• Controls the main spindle motor in CNC machines
• Converts CNC commands into high-power 3-phase output
• Regulates:
  • Spindle speed (RPM)
  • Cutting torque
  • Acceleration / braking

👉 It is used for heavy-duty machining where high spindle power is required.

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📊 Key technical overview

• Power class: ~75 kW range (heavy industrial spindle drive)
• Input supply: 400–480 VAC class systems
• Output current: very high-current spindle operation (hundreds of amps depending on configuration)
• Designed for continuous industrial duty in large CNC systems

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🏭 Applications

Used in:

• Large CNC machining centers
• Heavy-duty lathes
• High-power milling / boring machines
• Production lines requiring strong spindle torque

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🔁 Position in A06B-6151 series

• H006 → small spindle (~5.5 kW)
• H011 → ~11 kW
• H015 → ~15 kW
• H030 → ~30 kW
• H045 → ~45 kW
• H075 → ~75 kW (high-power industrial spindle drive)

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✔️ Simple summary

A06B-6151-H075 = FANUC αi spindle amplifier (~75 kW class), used to drive large CNC spindle motors for heavy machining.