caption: The image shows a diagram of a rotary screw spindle, which is a type of rotor that is used to rotate a motor. It consists of a screw, a rotor cap, a stator, and an insulator, all of which are connected to the motor by a series of wires. The diagram also shows the various components of the motor, such as the rotor, the spindle and the insulator. The text accompanying the diagram explains the purpose of each component and how they interact with each other.