Electric actuator is also known as the electric actuator, applied to various industrial automation process control link. The electric actuator is divided into: the angle of the stroke, the stroke and the multi turn type. Angular travel and direct travel most of the implementation is based on the multi turn type and to transform the: to multi turn based, with the worm gear worm gear two to form a 0~90 angle stroke electric actuator; equipped with wire rod component direct travel electric actuator.

Main advantages of electric actuator:

A high degree of stability and the user can apply a constant thrust, the maximum thrust force can reach 225000kgf, can achieve such a big thrust of the actuator, but the hydraulic actuator cost much higher than the electric. The anti deviation ability of electric actuator is very good, the output of the thrust or torque is basically constant, can be a very good to overcome the imbalance of the medium, to achieve accurate control of the process parameters, so the control precision is higher than the pneumatic actuator. If equipped with a servo amplifier, can easily achieve the positive and negative effects of the exchange, you can easily set off the signal valve position (keep / open / closed), and failure, must remain in situ. This is pneumatic actuators for less than a pneumatic actuator must rely on a combination of the protection system to achieve security bit.

The main disadvantages of electric actuator:

The structure is more complex, more prone to failure, and because of its complexity, the technical requirements of the field maintenance personnel are relatively high; motor running to produce heat, if the regulation is too frequent, easy to cause motor overheating, resulting in thermal protection, but also increase the gear wheel wear; another is running slow, from the regulator output a signal to adjust the valve response and movement to the corresponding position, it is not good for pneumatic, hydraulic actuator.