What is the difference between a rotary and a linear actuator?

An example of a rotary actuator is an electric motor, which is an actuator that converts an electrical signal into a rotating motion of its shaft. Linear actuators, on the other hand, produce a non-rotary motion, such as a sliding motion, or piston motion in response to an input signal. The distinction between a linear actuator vs rotary actuator is somewhat abstract.

What is the difference between a rotary and a linear actuator?

Actuators can be classified into two types based on their motion. Two primary actuator types are rotary, and linear. An example of a rotary actuator is an electric motor, which is an actuator that converts an electrical signal into a rotating motion of its shaft. Linear actuators, on the other hand, produce a non-rotary motion, such as a sliding motion, or piston motion in response to an input signal. The distinction between a linear actuator vs rotary actuator is somewhat abstract. However, as a linear actuator can be built using a normal rotary motor as its basis, and vice verse. In each case, the initial motion produced is mechanically converted to the other motion-type. Linear actuators can be electrically operated or pneumatic. The pneumatic diaphragm actuator is more popular and used to actuate linear valves such as globe, three-way (diverting or mixing) and angle valves. Pneumatic linear actuators have the simplest construction and provide very precise control of flow. There are several factors that need yo be considered while choosing a linear actuator vs rotary actuator.