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Fanuc A02B‑0338‑B502 21i‑MB / Oi‑TF CNC System Controller

The Fanuc A02B‑0338‑B502 is a compact Fanuc CNC system controller designed as a system host for multiple Fanuc series, including 21i‑MB, Oi‑TD, Oi‑MD, and Oi‑TF. This Fanuc CNC system controller provides integrated CPU, memory, and I/O processing for high‑reliability control in industrial machining and automation.

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100k+ Parts

Extensive Inventory

Warranty Coverage

New parts: 1-Year | Used: 3-Month

17+ Years

Industry Experience

Fast Shipping

Ships Within 48 Hours

Product Description

The A02B‑0338‑B502 system controller is a versatile Fanuc CNC controller module that supports several Fanuc platforms such as Series 21i‑MB, Oi‑TD, Oi‑MD, and Oi‑TF. It is engineered as a central control unit that integrates the main CPU, memory, and communication interfaces, enabling smooth coordination of CNC motion, HMI, and I/O logic in industrial machine‑control systems.

This Fanuc CNC system controller typically features a 10.4‑inch TFT‑LCD color display with an iHMI‑style interface, providing an intuitive environment for G‑Code programming, diagnostics, and machine operation. It supports Ethernet, USB, and RS232 communication for program transfer, backup, and remote monitoring, and is compatible with Fanuc drives and I/O modules via standard FSSB and I/O‑Link‑style interfaces. The controller is suitable for CNC lathes, milling machines, and robotics‑integrated systems that require a compact, high‑performance control brain.

Physically, the A02B‑0338‑B502 system host is built as a compact, panel‑mountable industrial unit with a low‑profile housing suitable for dense CNC cabinets. It is manufactured in Japan and typically supplied as a 100% tested or refurbished module with a 12‑month warranty for new and 3‑month for used units. With fast delivery and broad compatibility across multiple Fanuc series, this Fanuc CNC system controller is an excellent choice for control‑rebuild projects, retrofits, and OEM automation setups involving 21i‑MB, Oi‑TD, Oi‑MD, or Oi‑TF‑based machines.

Key Specifications

Specification Value
Brand Fanuc
Model A02B‑0338‑B502
Series Compatible with 21i‑MB / Oi‑TD / Oi‑MD / Oi‑TF
Product Type Fanuc CNC system controller / system host
Display 10.4″ TFT‑LCD color HMI (typical)
Interface iHMI‑style touch / key panel
Programming Language Fanuc G‑Code / ISO‑style
Communication Ethernet, USB, RS232, others as per series
Memory / Processing Integrated CPU, RAM, and Flash memory for CNC and PMC
I/O & PLC Integrated PMC for machine logic and I/O control
Drive Interface FSSB / Fanuc‑standard servo communication
Condition 100% tested or refurbished
Warranty (New) 12 months typical
Warranty (Used / Refurbished) 3 months often quoted
Typical Application CNC lathes, milling machines, robotics‑integrated automation
OEM / Retrofit Use Control rebuild, panel replacement, spare control module

What Happens After You Order?

1
Step 1

Order Confirmed

Receive email confirmation once your order or quote is received. We review your request and prepare your parts for the next step.

2
Step 2

Personal Representative

A dedicated rep contacts you to verify specs, confirm shipping details, and answer any questions before dispatch.

3
Step 3

Tested & Shipped

Parts go through rigorous final testing. Once verified, your order is carefully packed and shipped with full tracking info.

FAQ

What is your main line of business?

We specialize in the supply and repair of industrial automation components and CNC spare parts. Our inventory covers 20+ world-class brands including Fanuc, Siemens, Mitsubishi, Lenze, IFM, and SICK, featuring 100,000+ SKUs in stock. Whether you need servo drives, PLC modules, motors, encoders, or sensors, we provide tested, ready-to-ship solutions for both new and refurbished parts.

Where is your company? How do I get there?

Our headquarters is located at Rooms 801–802, Building A1-2, Area A, Guangda We Valley, Zongbu 2nd Road, Songshan Lake Park, Dongguan City, Guangdong Province, China. Our facility is equipped with professional testing labs and a clean, modern warehouse environment.

Do you have test equipment? How long is the delivery time?

Yes — we maintain complete in-house testing equipment, and 100% of parts are fully tested before shipment. Most items are in stock and ready for immediate dispatch. For stocked items, we offer 48-hour express global delivery; standard worldwide shipping typically arrives within 7 days.

What's the warranty on your parts?

New parts: 1 year
Used : 3 months

If a part does not function properly upon receipt, please contact our customer service team immediately and provide a clear video showing the issue. Once verified, you may return it to us within 7 days for an exchange or refund. Returns without prior contact and video evidence may not be accepted.

How about the packing when they are sent out?

All shipments are carefully protected with foam padding to fill every space inside the box, ensuring parts remain secure during transit. We typically use reinforced cardboard boxes; for heavier or high-value items, we provide custom wooden crates for added protection.

What deliveries are available?

We ship globally via UPS, DHL, FedEx, TNT, and EMS, with flexible options to match your urgency and budget.

OUKE Automation is not an authorized distributor unless otherwise specified, representative, or affiliate of the manufacturer of this product. All trademarks and documents are the property of their respective owners and are provided for identification and informational.

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