A Comprehensive Guide to Electric Rotary Actuators

The Future is Electric: A Comprehensive Guide to Electric Rotary Actuators

Electric rotary actuators are the future of automation technology. They offer a wide range of benefits compared to their traditional counterparts, making them an ideal choice for industrial applications. This comprehensive guide will explain electric rotary actuators, how they work, and why they’re the perfect solution for your next automation project. 

What is an Electric Rotary Actuator?

An electric rotary actuator is a type of electric motor used to produce a precise, continuous motion in response to a given signal.

The actuator works by converting electrical energy into mechanical force, which can then be used to control the direction and speed of a system or machine. These motors are typically constructed from durable materials such as stainless steel, aluminum, or plastic and are commonly used in various industrial applications.

How Does It Work? 

An electric rotary actuator is an electro-mechanical device that converts electrical energy into mechanical force to create linear or rotary motion. The actuator contains two main components: the stator and the rotor. The stator is a stationary electrical current generator that produces the magnetic field to power the motor.

The rotor is a rotating component that interacts with the stator’s magnetic field and produces a force that moves the output shaft. This interaction between the two components creates torque, resulting in the actuator’s output shaft rotational motion. Depending on the stationary structure that houses the electrical components, the rotor rotates within the stator to create motion. 

The rotor is connected to a drive shaft, which transmits mechanical force to other parts of the system or machine. An electric signal is sent to the actuator’s electronics to control its movement, causing it to actuate in response. Electric rotary actuators are often used to power valves, pumps, and other components in industrial automation applications.

Benefits of an Electric Rotary Actuator


Electric rotary actuators are highly reliable, providing consistent and precise motion in harsh environments. There are no moving parts to wear out and require maintenance, reducing downtime and increasing efficiency.


Electric rotary actuators can be configured for various operations, making them ideal for custom applications. They can also be programmed to perform various functions, allowing you to tailor the system to your needs. 


Electric actuators require little maintenance and consume less energy than traditional pneumatic or hydraulic systems. This makes them an ideal choice for energy-conscious businesses


Electric actuators eliminate the risk of combustion, fire, and explosions associated with traditional pneumatic or hydraulic systems. They are also much quieter, reducing noise pollution and making them better for residential applications.


These motors can be easily customized to fit any application, making them an ideal choice for various industrial automation projects. 


Electric rotary actuators are initially more expensive than traditional systems but have a much lower total cost of ownership due to their high efficiency and low maintenance requirements. 

Applications of Electric Rotary Actuators

Food and Beverages Processing

Electric rotary actuators are often used to power valves, pumps, and other components in food and beverage processing applications. ‘Food processing is one of the applications of a rotary actuator due to its ability to deliver precise and accurate motion control in harsh environments. 


Electric rotary actuators are ideal for robotics applications due to their flexibility, efficiency, and reliability. They can be programmed to perform various functions, making them well-suited for custom automation projects. 

Industrial Automation

Electric rotary actuators, such as conveyor belts and assembly lines, are commonly used in industrial automation applications. They can be configured to power various components, making them an ideal choice for custom projects. 


These motors can precisely control machinery in manufacturing plants. Electric rotary actuators are a great choice if accurate motion control is required. 


Electric rotary actuators are often found in automated packaging machines for consumer goods. When used with other components, they can help ensure efficiency and accuracy. 

Bottom Line

Electric rotary actuators have become the go-to choice for precise motion control applications. You need to know that actuators come in various shapes and sizes with different performance levels. Depending on the application, different types of electric rotary actuators can be used to achieve the desired results.