Description
🔧 Model Overview
A06B-6117-C255 is a FANUC Alpha i (αi) spindle amplifier module in the 6117-C series, designed for specialized or high-power spindle applications.
It is part of the extended “C2xx” lineup, which typically handles higher power ratings or specific machine configurations beyond the standard C2xx series (C201–C211).
⚙️ Full Technical Description
👉 A06B-6117-C255 = Alpha i Spindle Amplifier (SPM-XX type, high/extra power)
- Series: Alpha i (αi) Spindle System
- Type: AC Spindle Amplifier / Drive
- Model Class: Likely SPM-100+ class (very high/extra power spindle amplifier)
- Function: Drives main spindle or C-axis motors, controlling speed, torque, and orientation
⚙️ What It Does
This module:
- Drives high-power spindle motors
- Controls speed, torque, and spindle orientation
- Supports rigid tapping and synchronized spindle + axis motion
- Interfaces with FANUC CNC via FSSB (fiber optic bus)
👉 Simple meaning:
It converts CNC spindle commands into precise rotation with high torque for specialized heavy-duty applications.
🔩 Key Specifications (Typical / Estimated)
- Model Type: SPM-100+ class (exact power depends on spindle setup)
- Input Voltage: ~283–339 V AC (3-phase)
- Output Voltage: ~200–240 V
- Cooling: Forced-air (fan-cooled)
- Feedback: Spindle encoder supported for precise orientation
🏭 Applications
- Very large CNC machining centers
- Heavy-duty or specialized CNC lathes
- Machines requiring maximum spindle torque and speed
- Custom industrial systems with high spindle power demands
🔍 Key Features
- ✔ High/extra high-power spindle amplifier
- ✔ Supports rigid tapping & spindle orientation
- ✔ Stable performance under continuous heavy load
- ✔ High precision speed and torque control
- ✔ Compatible with FANUC αi spindle motors
⚠️ Important Difference
- A06B-6117-H* → Servo amplifiers for axes (X, Y, Z, etc.)
- A06B-6117-C* → Spindle amplifiers (rotation control)
- C2xx vs C2xx-H/other series → Typically indicates higher or specialized power class beyond standard C201–C211 modules
🧠 Simple Explanation
👉 A06B-6117-C255 is a very high-power or specialized spindle amplifier used in heavy-duty CNC machines requiring extreme torque, precise speed, and spindle orientation.


