What type of components do most robotic arms rely on for movement?

Most robotic arms rely on gears and motors for movement because these components provide the necessary torque and precise control required for robotic motion. Gears are integral for translating the rotational force generated by motors into movement of the arm, allowing for various degrees of freedom and the ability to perform complex tasks. Motors, whether they are stepper motors or servo motors, convert electrical energy into mechanical energy, enabling the robotic arm to move with accuracy and speed. This combination allows for efficient movement and manipulation of objects, which is essential in a wide range of applications from industrial manufacturing to robotic surgery.

While other options may include various mechanical systems, they do not provide the same level of precision and control offered by gears and motors, which are fundamental to the operation of robotic arms.