FANUC A20B-8100-0665 Main CPU Board 21i-B Ethernet Tested In Stock

FANUC A20B-8100-0665

FANUC A20B-8100-0665 Main CPU Board (21i-B Ethernet)

In stock

$675.00 USD

Shipping:

Delivery: Estimated 2- 6 business days delivery. See details

Returns: 14 days returns. See details

All parts are covered by REACO CNC warranty

All parts tested under load

Fast response, global shipping, expedited shipping available

Free technical support

More than 100,000 parts in stock & ready for delivery

FANUC A20B-8100-0665 Main CPU Board (21i-B Ethernet) – Tested

Brand	FANUC
Model	A20B-8100-0665
Handing time	within 1-2 working days
Shipping Method	DHL/UPS/FedEx
Estimated Delivery Time (via DHL)	Asia: 1-3 business days Europe: 2-4 business days North America: 2-4 business days South America: 3-6 business days Middle East & Africa: 3-6 business days Oceania: 2-5 business days
Warranty	NEW/Refurbished: 1-Year warranty Used(90% New): 3-Month warranty
Category	PCBs
Parameter Description	A20B81000665 DISCONTINUED BY MANUFACTURER PC BOARD PCB - MAIN CPU FANUC 21I CONTROL ETHERNET MAIN CPU BOARD 21 I-B CONTROL W/ ETHERNET PMC-SB7 CNC
Service	Test video will be sent before delivery
Packing	Cartons

The A20B-8100-0665 PCB is a main CPU board designed for FANUC 21i-B CNC systems, with Ethernet communication support and PMC-SB7 integration.

It provides:

Core system processing
Integrated CNC and PMC control
Stable and high-performance operation

This board is essential for maintaining full CNC system functionality.

Includes Ethernet interface for modern connectivity.

Fully tested before shipment
In stock and ready to ship
Fast global shipping available

Product Details

Part Number: A20B-8100-0665
Type: Main CPU Board
System: FANUC 21i-B
Communication: Ethernet
PMC: PMC-SB7
Function: System Processing

Manufacturer: FANUC

Applications

FANUC 21i CNC systems
Industrial automation
Machine control systems
System upgrade and repair

Sales & Support

Tested CPU boards
Fast worldwide shipping
Technical support available

Warehouse shelves filled with boxed FANUC CNC parts, showing Reaco CNC’s large inventory for fast global delivery.

Over 100,000 CNC Parts in Stock

With an extensive inventory of FANUC and Mitsubishi components, we ensure fast delivery and reliable replacements — minimizing your downtime.

Shop now

Packaging process showing wooden crates for heavy items and reinforced double-layer cartons for standard products.

Fast Global Delivery

DHL, UPS, FedEx Global shipping.
Expedited shipping available
Packed in secure reinforced cartons for maximum protection during transport.

Technician operating FANUC CNC testing benches during system inspection and repair at REACO CNC.

Need Expert Assistance?

Our experienced engineers provide technical support for all FANUC and Mitsubishi CNC parts — including troubleshooting, installation guidance, and repair consultation.

Get in touch