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FANUC A20B-2101-0922 is a power board for compatible FANUC Alpha i spindle amplifier modules. A documented application identifies it as the power PCB installed in the A06B-6220-H011#H600 Alpha i-11 spindle amplifier, paired with the A20B-2101-0870 control board.
This listing covers the internal A20B-2101-0922 circuit board only, not a complete spindle amplifier. Match the full board number, slash revision, host A06B module and connector arrangement before replacement.
A20B-2101-0922 Product Information
| Brand | FANUC |
| Model / MPN | A20B-2101-0922 |
| Alternate Format | A20B21010922 |
| Product Type | Spindle amplifier power board / power PCB |
| Board Series | A20B-2101 |
| Amplifier Family | FANUC Alpha i spindle amplifier |
| Documented Host | A06B-6220-H011#H600 Alpha i-11 spindle amplifier |
| Associated Control Board | A20B-2101-0870 in the documented host configuration |
| Primary Function | Internal power-stage switching and distribution |
| Supply Scope | A20B-2101-0922 PCB only; amplifier housing and control board excluded |
| Condition | New, refurbished, or used 90% new; subject to stock |
| Testing | 100% tested before shipping; test video available |
| Handling | Normally 1–3 business days |
| Shipping / ETA | DHL, UPS, or FedEx worldwide; typically 3–7 business days |
| Warranty | 1 year for new/refurbished; 3 months for used 90% new |
| Service / Packing | Free technical support; anti-static reinforced packing |
Alpha i Spindle Power-Stage Function
Within the amplifier, the A20B-2101-0922 carries power-stage components and interfaces required for spindle-motor power control. It operates with the amplifier control PCB and other module hardware; it cannot function as an independent spindle drive or CNC controller.
Compatibility and Board Matching
Confirm A20B-2101-0922 on the original PCB and record any revision printed after the base number. Also compare the complete A06B amplifier model, power rating, connector positions, PCB dimensions and installed control board. A20B-2101-0920, -0921, -0923 and other similar power boards are not automatically interchangeable.
Testing and Installation
REACO CNC checks the board label, substrate, capacitors, power devices, connectors, solder joints and signs of overheating, followed by applicable electrical and amplifier testing. Installation must be completed by qualified personnel after isolating incoming power and allowing the amplifier DC bus to discharge fully.
Related resources: FANUC circuit boards, FANUC spindle drives and FANUC CNC repair service.
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