What type of motors are typically utilized for joint movement in FANUC robots?

FANUC robots primarily utilize servo motors for joint movement due to their precision and control capabilities. Servo motors are designed to provide accurate positioning and speed control, which are essential for robotic applications where the exact movement and placement of the robot's joints are crucial.

These motors use feedback mechanisms to ensure that they can correct their position and speed dynamically, making them suitable for tasks that require high repeatability and accuracy. In robotic systems, servo motors can be driven in a closed-loop configuration where they continuously receive feedback from encoders or sensors, enabling real-time adjustments. This characteristic is particularly important in applications such as assembly, welding, and material handling, where even small deviations in position can lead to significant issues.

While other types of motors like AC motors and DC motors are used in various applications, they do not offer the same level of precision and responsiveness that servo motors provide. AC motors are typically used for applications requiring constant speed and high power but may lack the fine control needed for precise joint movements. Stepper motors can offer positional control, but their resolution and performance under heavy loads are often not as reliable or effective as servo motors in advanced robotic systems. This is why servo motors are the preferred choice for joint movement in FANUC robotics.