Description
FANUC A02B-0281-B803 – Description
The FANUC A02B‑0281‑B803 is an industrial CNC control chassis / basic unit used in FANUC CNC systems. It’s part of the A02B-0281 product series and serves as a modular foundation for building or repairing CNC controller systems.
📌 Key Features
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Part Number: A02B-0281-B803
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Function: 3-slot stand-alone basic control unit / chassis (no internal electronics included)
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Series Compatibility: FANUC 16i / 160i / 160i-SB CNC control systems
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Design: Provides three slots to install necessary control boards (CPU board, display/interface board, I/O modules, etc.)
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Standalone: Blank chassis that ships without electronics or software — you must install control PCBs and load program files/parameters yourself
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Industrial Build: Rugged manufacturing quality suitable for machine tools and machining centers
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Core Exchange: Often supplied through core-exchange or refurbished aftermarket programs since FANUC discontinued direct production
🧠 How It’s Used
This unit is not a complete CNC controller by itself — it’s the structural backbone into which you insert the necessary electronic boards and software that control the machine tool. Common uses include:
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OEM builds of CNC systems
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Retrofit projects to replace worn or outdated control bases
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Spare parts inventory to reduce machine downtime
⚙️ Technical Notes
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Slots: Three available for modular expansion of PCBs (for CPU, I/O, communication, display, etc.)
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Refurbished Availability: Widely available through aftermarket sources, often with warranties and testing depending on supplier
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Discontinued: FANUC no longer actively makes this exact part, so new units are typically surplus or refurbished