What is another word for actuator?
Pronunciation: [ˈakt͡ʃuːˌe͡ɪtə] (IPA) 
Actuators are devices that convert various kinds of energy into mechanical movement or control in industrial and mechanical systems. These devices are used to manage machine movements by converting various inputs such as current, magnetic force, hydraulic pressure, and thermal energy into movement. The range of motion they accomplish is vast and multifaceted.
Some common synonyms for actuator are motor, operator, control mechanism, solenoid, electromagnetic actuator, motion controller, and linear actuator. Other synonyms include pneumatic actuator, piston drive, rotary drive, ball screw, and stepping motor. The different types of synonyms cater to their varied use specifically. The synonyms provide engineers and designers with a broad range of options to choose from, based on their needs and the complexity of the mechanical system they are managing.
