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Brand | Fanuc |
Status | NEW/USED |
Warranty | 12 months/3 months |
Type | Drive control card A20B-2101-0870 |
High-precision control | Use advanced algorithms to achieve precise speed and position control and improve equipment performance. |
Efficient heat dissipation design | Optimize heat dissipation structure to ensure long-term stable operation and reduce failure rate. |
Modular integration | Compact design, easy to install and maintain, and supports flexible system expansion. |
The Fanuc A20B-2101-0870 power circuit board is a critical component within Fanuc CNC control systems, responsible for supporting internal power distribution and ensuring stable electrical operation inside the control unit.
In modern CNC machines, control electronics must operate with high precision and reliability. A stable power circuit board ensures that various modules inside the CNC system receive consistent voltage and operate without signal disruption.
At FanucBuy, we supply original Fanuc A20B-2101-0870 boards to help manufacturers, maintenance engineers, and CNC service companies quickly replace faulty components and restore machine operation.
Using genuine Fanuc parts helps maintain system stability and prevents compatibility issues that may arise from non-original replacements.
Original Fanuc CNC control board
Designed for reliable power management inside CNC control systems
Ensures stable voltage distribution between control modules
Supports long-term operation in industrial environments
Strictly inspected before shipment
Suitable for repair and maintenance of Fanuc CNC machines
This board plays an important role in maintaining consistent electrical performance, which is essential for accurate machining and machine reliability.
| Specification | Details |
Product Name | Fanuc Power Circuit Board |
Part Number | A20B-2101-0870 |
Manufacturer | Fanuc |
Product Type | CNC Control PCB Board |
Application | Fanuc CNC Control System |
Function | Power Distribution / Circuit Control |
Condition | Original |
Availability | In Stock |
Shipping | Worldwide Delivery |
Within a Fanuc CNC controller, multiple electronic modules work together to manage machine movement, signal processing, and machining instructions.
The power circuit board ensures that these modules receive stable electrical supply.
Its main functions include:
distributing electrical power to control system components
maintaining stable voltage levels for electronic circuits
protecting control electronics from electrical instability
supporting reliable communication between control modules
If the power circuit board fails, the CNC system may experience startup problems, communication errors, or unstable machine behavior.
A malfunctioning power circuit board can cause several issues in CNC machines.
Common warning signs include:
CNC machine failing to power up correctly
system alarm messages related to power modules
unstable control system operation
intermittent communication failures within the controller
unexpected machine shutdowns
When these symptoms occur, maintenance technicians often inspect the control cabinet and verify the Fanuc part number of the installed board.
Replacing the defective board with the correct A20B-2101-0870 component can quickly restore system stability.
To confirm the correct Fanuc replacement board, technicians usually follow these steps:
Open the CNC control cabinet.
Locate the label on the installed PCB board.
Verify the printed part number.
Fanuc PCB part numbers typically follow the format:
A20B-XXXX-XXXX
If the label shows A20B-2101-0870, then this board is the appropriate replacement.
For additional verification, engineers may also check:
CNC controller model
machine manufacturer specifications
board revision numbers
If confirmation is needed, FanucBuy engineers can help identify the correct part based on board photos or machine details.
For CNC equipment used in industrial production, the reliability of control electronics directly impacts machine uptime.
guaranteed compatibility with Fanuc systems
high-quality industrial components
stable electrical performance
longer operational lifespan
inconsistent component quality
potential voltage instability
higher failure risk under heavy workloads
possible system compatibility problems
For most CNC factories and maintenance teams, using original Fanuc spare parts helps reduce unexpected machine downtime.
FanucBuy is a specialized supplier of Fanuc CNC components, providing replacement parts to manufacturers and service providers worldwide.
We supply a wide range of Fanuc components, including:
Fanuc circuit boards
Fanuc servo amplifiers
Fanuc spindle modules
Fanuc power supply units
Fanuc motors and encoders
Our team has extensive experience in Fanuc CNC control systems, helping customers quickly identify the correct replacement parts.
We provide efficient worldwide delivery to help reduce production downtime caused by machine failures.
All components are carefully inspected before shipment to ensure they meet industrial operating standards.
The A20B-2101-0870 board manages electrical power distribution within the CNC control system. It ensures that internal modules receive stable power supply so the CNC controller can operate reliably and execute machining instructions accurately.
In some cases, experienced electronics technicians may repair certain PCB faults. However, for production environments where machine uptime is critical, many factories choose direct replacement with original Fanuc boards to ensure long-term reliability.
Fanuc control boards are designed for long industrial lifetimes. Under normal operating conditions, they can function for many years. However, factors such as:
excessive heat inside the control cabinet
electrical surges
dust or humidity exposure
continuous high-load machine operation
can shorten their lifespan.
Regular maintenance of the CNC control cabinet can help extend the life of electronic components.
For trained technicians, replacing a control board is usually a relatively quick maintenance task.
Typical installation steps include:
powering down the CNC machine
removing the faulty board
installing the replacement PCB
restarting the system and verifying operation
Having the correct spare part available can significantly reduce machine downtime.
If you are searching for a reliable Fanuc power circuit board supplier, FanucBuy can provide the original A20B-2101-0870 board with fast global delivery.
Contact us today to receive:
pricing information
stock availability
compatibility confirmation
shipping options
Our goal is to help CNC manufacturers restore machine operation quickly and maintain efficient production.
Weite Welcomes Your Inquiries for More Fanuc Parts