What is a Rotary Actuator?
A rotary actuator is a pneumatic cylinder used to provide a turning or angular movement, allowing a stroke in an oscillating motion through a defined angle. They are durable and give a relatively high force (torque) for size. Rotary actuators simplify a design and can reduce maintenance issues. How does a rotary actuator work? - A rotary actuator operates by applying force at a distance from the axis of rotation, inducing a turning motion. There are two primary types: rotary vane actuators and rack and pinion actuators, each functioning as follows: - In a rotary vane actuator, compressed air propels against a vane connected to a central spindle, causing it to rotate. The air 'behind' the vane is then released through a port. Upon reaching a predetermined angle of rotation, the airflow reverses, prompting the spindle to return to its original position, ready to repeat the process. Rotary vane actuators are typically utilized for lighter loads due to their...