Also known as: RA#, RA...
RA stands for various terms. Discover the full forms, meanings, and possible interpretations of RA across different fields and industries.
An actuator is a mechanical device used to move one component relative to another. There is no one design for an actuator - they are designed specifically for the job they need to perform. Rotary actuators are used to drive the rotational motion of another component. A hydro-mechanical device that converts fluid flow into incremental rotary motion as compared to a fluid motor which produces infinite numbers of turns.
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