Used FANUC A20B-8200-047 CNC System Main Board CPU Card

The FANUC A20B-8200-047 is a genuine, high-performance master main board (CPU board) engineered for high-end FANUC Series 30i, 31i, and 32i Model B CNC control systems. As the core processing heart of the control cabinet, this motherboard coordinates complex multi-axis interpolation, high-speed ladder logic execution, and system-wide bus communications. Tested rigorously under full system simulations, it serves as the definitive MRO replacement part to recover your flagship machining center from fatal system freezes or booting failures.

Part Number: A20B-8200-047
Condition: Used / Refurbished
Brand: FANUC
Compatibility: Natively fits FANUC Series 30i-B, 31i-B, and 32i-B Model B control racks.
Key Strengths: Ultra-fast processing throughput, robust SMD architecture, high-density connection slots, and drop-in original OEM reliability.

Product Detail

Genuine FANUC A20B-8200-047 Series 30i-B Master Main Board

Restore absolute precision and fluid multi-channel operations to your flagship machining infrastructure with this authentic FANUC A20B-8200-047 Main Board. Operating as the central brain of the FANUC 30i-B platform, this multi-layer master circuit board manages high-frequency processor algorithms, axis position command synchronization, and background safety logic circuits, making it vital for maintaining maximum production throughput.

Why Source Refurbished FANUC 30i Series Motherboards From Us?

Comprehensive Boot & Load Diagnostics: High-end CPU boards require absolute integrity. Every A20B-8200-047 main board we stock undergoes rigorous testing on authentic FANUC 30i-B backplane enclosures. We comprehensively verify system boot-up logs, memory read/write cycles, FSSB communication stability, and peripheral card connectivity to ensure a 0% field failure rate.
Seamless Drop-In Hardware Integration: Manufactured strictly to original FANUC OEM factory specifications. Your technical maintenance team can easily execute a direct physical swap of the faulty board with our unit, avoiding complex chassis retrofitting or slot alignment issues.
Avoid Catastrophic Factory Downtime: Mainboard blowouts usually paralyze an entire multi-axis CNC milling or turning cell, causing massive financial losses every hour the machine sits idle. Our certified pre-owned units offer an immediate, cost-effective alternative to long factory backlogs and high price tags from the OEM network.
Industrial Resiliency: Engineered with premium solid-state components and thick anti-corrosion protective coatings, this PCB effectively deflects factory heat accumulation, static spikes, and constant machine-induced vibrations.