Keeping a CNC machine running smoothly often comes down to finding the right replacement part, and that starts with understanding Fanuc part numbers. For maintenance floor managers, part numbers play a critical role in avoiding mismatches, reducing downtime, and keeping repairs on schedule. A single digit or suffix can mean the difference between a compatible replacement and a costly delay.

Fanuc uses a structured part number system that identifies everything from motors and drives to displays and control boards. Once you understand how that system works, tracking down the correct Fanuc parts becomes far more straightforward. This guide breaks down how Fanuc CNC part numbers are built, what the different segments mean, and how to confidently approach a Fanuc part number lookup when servicing or sourcing components.

Whether you’re working through a Fanuc motor part number breakdown or identifying Fanuc control panel parts, knowing how to read the numbers saves time and prevents repeat work. The sections below walk through common Fanuc part categories and explain how to decode them in a practical, shop-floor-friendly way.

 How the Fanuc Part Number System Works

Fanuc part numbers aren’t random. They follow a structured format that identifies the part category, series, options, and configuration. Understanding the basic layout of a Fanuc part number breakdown helps identify compatible replacements with more accuracy so you can better avoid misorders.

Most Fanuc CNC part numbers follow a pattern like this: AxxB-xxxx-xxxx#xxxx. Each segment has a purpose:

• AxxB: Indicates the product type (motor, PCB, drive, etc.)
• Middle digits: Identify the series, model, and core specs
• Final segment (after the dash or hash): Often denotes specific features, factory options, or region-specific versions

While the format is consistent, the meaning of each number depends on the part category. What applies to Fanuc control PCBs won’t necessarily match the format for a Fanuc servo motor part number breakdown. That’s why it’s important to look at each type of part separately, especially when evaluating replacements or retrofits.

In the next sections, we’ll break down how this format applies to motors, displays, controls, and more, giving you a clearer path through the part number system.

Common Fanuc Part Numbers and Their Meanings

1. Fanuc Control Systems & Complete CNC (A02B-0###-B###)

This code encompasses the core of Fanuc’s CNC technology. Fanuc controls are the brains behind many manufacturing operations.

2. Fanuc MDI Unit (A02B-0###-C###)

CRT MDI displays, LCD MDI displays, and operator panels fall under this category, essential for interfacing with CNC systems.

3. Fanuc I/O Modules (A03B-08##-C###)

I/O modules, both full-sized and half-sized, are crucial for connecting various devices to the CNC system.

4. Fanuc Motors (A06B-####-B###)

Fanuc motors drive the machinery, and their part numbers help identify different motor types and specifications.

5. Fanuc Drives (A06B-6###-H###)

Drives are responsible for controlling motor movements, and their part numbers indicate specific drive models.

6. Fanuc Alpha Modules (A06B-6070-H### onwards)

Alpha modules include SVM, SVU, PSM, SPM, and more, which are integral to CNC systems.

7. Fanuc Tapereaders (A13B-0###-####)

These part numbers correspond to various tapereader models used for data input.

8. Fanuc Power Supply Units (A14B-####-####)

These units provide power to the CNC system, and part numbers help identify different types and capacities.

9. Fanuc Control and Drive Boards (A16B-####-####)

These boards are essential components of Fanuc CNC systems, and their part numbers distinguish between different types and versions.

10. Fanuc PCBs (A20B-####-####)

Part numbers for PCBs (Printed Circuit Boards) specify their use in drive, system, or power supply applications.

11. Fanuc Transistor Modules (A50L-0001-0###)

Transistor modules play a role in power regulation within the CNC system.

Not Sure What That Part Number Means?

You don’t have to navigate Fanuc’s part number system alone. The team at T.I.E. Industrial helps maintenance managers identify, source, and repair the exact Fanuc parts they need—fast.

• Help identifying or cross-referencing part numbers
• Guidance on obsolete or discontinued components
• Support with replacement, repair, or rebuild options

Contact us today if you’re stuck on a number or need expert support.

12. Fanuc Monitors (A61L-0001-00##)

These are display units used for monitoring and control purposes.

13. Fanuc Connectors and Sockets (A63L-0001-0###)

Part numbers for connectors and sockets help maintenance teams identify and source the right components.

14. Fanuc Transformers (A80L-0001-0###)

Transformers are critical for voltage conversion within the CNC system.

15. Fanuc Keyboards and Soft-keys (A86L-0001-0###)

Part numbers for keyboards and soft-keys enable efficient maintenance and replacement.

16. Fanuc Memory (A87L-0001-0###)

Memory modules are essential for storing and processing CNC programs and data.

17. Fanuc Membranes (A98L-0001-0### and A98L-0005-0###)

Different types of membranes are used in various parts of Fanuc equipment.

18. Fanuc Batteries (A98L-0001-09## and A98L-0031-0###)

Batteries are essential for retaining important data and settings in the CNC system.

19. Fanuc Encoders (A860-0###-T###)

Encoders are critical for precise positioning and feedback in CNC machinery.

20. Fanuc PCB Fabrication (A350-####-####)

These codes pertain to PCB fabrication processes used by Fanuc.

21. Fanuc Tapereaders (A860-0###-T###)

Tapereaders are used for data input, and their part numbers help identify specific models.

22. Fanuc Keyboards (N860-####-####)

Part numbers for keyboards used in Fanuc systems are represented in this category.

Still Confused? At T.I.E. We’re Here to Help!

Understanding Fanuc part numbers can be challenging, but it’s crucial for efficient maintenance and replacement. If anything in this guide is unclear or if you have specific questions about Fanuc parts, don’t hesitate to reach out to us. Our experts are here to provide clarification and assistance.

Explore More Resources With Our Online Tech Support Library

For additional insights and information related to Fanuc equipment and maintenance, visit our Fanuc Alarm Codes page. We’ve got a wealth of resources to help you keep your manufacturing facility running smoothly.

Decoding Fanuc part numbers is a valuable skill for maintenance managers in manufacturing facilities. These codes contain vital information about Fanuc components, allowing for quicker identification, sourcing, and replacement of parts. With this knowledge in hand, you can ensure the continued efficiency and productivity of your manufacturing operations.