2 Major Types of Electric Actuators

Posted in Uncategorised, on March 25, 2022 By Admin

Actuators are often an integral part of complex engineering systems. They can be classified into two main categories, pneumatic and electric actuators. While the former uses air pressure and converts it to mechanical energy, the latter is electromagnetic in nature, converting electrical energy into physical movement. Essentially, electric actuators are mounted atop valves, and when given a signal, they move to the required position. As is evident, these are a little more sophisticated in mechanism than their pneumatic counterparts. To learn further about them, here are the 2 main types of electric actuators. 

Linear Actuators

As the name suggests, they are called so because they convert electrical energy into linear motion. Basically, it comprises a solenoid, which when electrically charged, helps in moving the equipment in a linear direction. Due to their straightforward range of motion, these actuators have fewer moving parts and are hence, easier to maintain. Moreover, they are also suitable for operation in tight tolerances, are safer to use, and are very easy to install.

Rotary Actuators

A little more complicated in terms of operation, rotary actuators use the same electromagnetic principle to facilitate a rotary motion. Since the range of motion is greater, they also offer better control and the capability to stop the motion at multiple points. While this translates to more moving parts and higher maintenance costs, they are still absolutely necessary in power generation, packaging, and in scenarios that require swift switching of gears. Furthermore, it is easier to detect an electrical fault with rotary actuators. 

While there are more types of electric actuators, these 2 are the most fundamental ones. Moreover, apart from the range of motion, the source of power and intensity of operation are also vital while selecting electric actuators. 

McRae Engineering designs and supplies the best electrical and pneumatic actuators for numerous types of valve systems. Consult us today to learn more about the best available options for your system.