CNC Mainboard CPU Board Fanuc A20B-8100-0321/02B Replacement
Condition:
USED
19
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Delivery
Estimated between Wednesday, November 4 and Friday, November 6
Returns
30-day returns. Buyer pays return shipping. See details – More info about returns
Payment
Wire Transfer (T/T) or PayPal
Fanuc A20B-8100-0321/02B
Reliable CNC mainboard for Fanuc 16i/18i/21i series controllers, ensuring stable machine control performance
| Brand | Fanuc |
| Model | A20B-8100-0321/02B |
| Voltage | 5V DC / 24V DC (system powered) |
| Country of Origin | Japan |
| Weight | 0.8 kg |
| Dimensions | 300x220x50 mm |
| Warranty | 6 months |
| Certifications | CE, UL |
| SKU / MPN | A20B-8100-0321/02B |
| What’s in the box | Fanuc CNC mainboard, mounting bracket, connector set |
| CPU | Fanuc proprietary processor |
| Memory | SRAM 2MB / DRAM 4MB |
| I/O Interface | Fanuc I/O Link, Ethernet |
| Communication | RS-232C, Ethernet, I/O Link |
| Power Supply | System powered (24V DC) |
| Mounting | Rack slot / card cage |
Key benefits: High reliability, proven Fanuc quality, direct replacement for CNC systems, stable processing for complex machining tasks
Typical applications: CNC milling machines, CNC lathes, machining centers, wire EDM machines, Fanuc 16i/18i/21i series controllers
Lifecycle: Discontinued (used surplus available), typical CNC system lifespan 10-15 years
1 review for CNC Mainboard CPU Board Fanuc A20B-8100-0321/02B Replacement
Clear filtersOur Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don’t worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
Shop with confidence knowing we are offering very competitve pricing!
Orders usually ship the same day
Rest assured your order will arrive as soon as possible knowing we usually ship the same day.
Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.
Run Business
Building a reputation for quality products at a reasonable price. Our inventory is far more extensive than what can be represented on our web site, so please call one of our knowledgeable salesmen with your specific needs.
David L. –
Excellent support when we had integration questions. The product met our standards.