Fanuc AC Servo Motor A06B-0243-B400 A06B0243B400 AO6B-O243-B4OO

New FANUC A06B-0243-B400 AC Servo Motor with 24V Brake for CNC and Industrial Motion Systems

The FANUC A06B-0243-B400 AC Servo Motor is designed for CNC equipment and industrial automation systems that depend on stable axis response, dependable torque output, and accurate motion control over long operating cycles. In practical factory use, a servo motor must do more than produce rotation. It has to respond smoothly to command changes, remain stable when load conditions shift, and support repeatable positioning in daily production. This model is well suited to that type of environment, especially in systems where brake-assisted holding and reliable encoder feedback are both important.

Key Technical Data

Built for Controlled Motion and Reliable Holding Performance

What makes this motor practical in real machine service is the way its output, brake function, and feedback configuration work together. In a CNC axis or automation assembly, motion quality depends on the motor being able to accelerate cleanly, stay predictable through changing load conditions, and stop in a controlled way when commanded. The A06B-0243-B400 is commonly presented as a motor intended for that kind of use, rather than as a basic general-purpose drive component.

Its published 2.5 kW output and 12 Nm torque make it suitable for applications that need meaningful servo performance without moving into a much larger motor class. In practical terms, that can support stable axis motion in CNC machinery, robotic handling, and material movement systems where repeatability matters just as much as force. When a motor can maintain stable motion under real operating conditions, the entire machine usually performs with greater consistency.

24VDC Brake for More Secure Axis Control

A built-in brake can be one of the most important features in a servo replacement, especially in equipment where the axis must hold position after a stop command or during power-off conditions. Available listings consistently associate the A06B-0243-B400 with a 24VDC brake, which makes it especially relevant in systems that require controlled holding behavior as part of normal machine operation.

For maintenance teams and rebuilders, that brake-equipped configuration is more than a convenience. It can be a key part of restoring the original behavior of the machine. In many production environments, holding performance directly affects safety, positional stability, and confidence during shutdown or pause conditions. Matching the correct brake setup therefore matters just as much as matching speed or shaft design.

Straight Shaft and A1000 Feedback for Practical Compatibility

A successful motor replacement depends on more than electrical data. The mechanical layout and feedback arrangement also need to align with the original machine. This model is widely described with a straight shaft and A1000 / AiA1000 pulsecoder, which gives buyers a clearer starting point when checking compatibility with installed equipment. Those two details are especially important because they affect both physical fit and the quality of position feedback seen by the control system.

In established FANUC-based systems, correct shaft style helps simplify coupling and alignment, while the expected feedback type helps preserve stable speed and position monitoring after installation. That combination can reduce commissioning time, lower the chance of retrofit issues, and improve the likelihood of restoring the machine’s intended motion characteristics without unnecessary adjustments.

Typical Applications

The FANUC A06B-0243-B400 AC Servo Motor is commonly considered for:

• CNC machine tools

• Industrial automation equipment

• Robotics and handling systems

• Precision axis control assemblies

• Compatible FANUC servo motor replacement projects

FAQ

Q1: Does the FANUC A06B-0243-B400 include a brake?
A1: Yes. Public product listings consistently describe the A06B-0243-B400 as a 24VDC brake-equipped servo motor. This is especially useful in applications where the axis must hold position after a stop command or where more controlled shutdown behavior is needed. In real industrial use, that brake can help improve positional stability and reduce unintended movement when the motor is not actively driving the load.

Q2: What shaft and feedback configuration is commonly associated with this model?
A2: Available listings commonly describe this motor with a straight shaft and A1000 / AiA1000 pulsecoder feedback. These are important details because they affect both mechanical installation and control-side compatibility. Confirming them before purchase can make replacement work easier and improve the chance of restoring the original motion characteristics of the machine.

Q3: What performance figures are commonly listed for the A06B-0243-B400?
A3: The most complete public distributor listing I found associates this model with 2.5 kW output, 12 Nm torque, 7 A current, 230 V, and 3-phase operation, along with a 3000 RPM operating class. These figures are useful as a practical reference for buyers comparing the motor against an installed unit, especially when checking whether the replacement falls into the right performance range for the application.

Q4: What kinds of applications is the FANUC A06B-0243-B400 suitable for?
A4: This servo motor is suitable for CNC machinery, industrial automation equipment, robotics, material handling systems, and compatible FANUC replacement projects. Its brake-equipped design, straight-shaft configuration, and servo feedback setup make it particularly relevant in systems where accurate motion, controlled stopping, and dependable long-term operation are all important.

Q5: Why is this model a practical choice for replacement or maintenance work?
A5: The A06B-0243-B400 is practical for replacement work because public listings consistently identify the same core compatibility details: straight shaft, 24VDC brake, and A1000/AiA1000 feedback. Those details matter in real service environments because they influence how easily the motor fits mechanically, how well the control system communicates with it, and how closely the machine can return to its original motion behavior after installation.