Linear Actuators vs. Linear Servo Actuators

Linear Actuators

Nowadays linear actuators are widely used in machine tools, dampers, computer peripherals, and many other places with linear motion required. So what is the difference between servo and non-servo actuators? What is more effective? Today we will back you up and free you from any doubt while choosing the right piece of equipment. Let us begin the battle linear servo actuators vs linear actuators.

Linear Actuators


A linear actuator is a device that performs the motion in a straight line and consists of a sliding tube, electric motor, fixed cover. There is usually a screw inside the sliding tube that rotates with the help of the lead nut making it one of the most widespread actuators.

Servo actuators productivity resembles a rheostat. It resembles the work of potentiometer and a separate control circuit one much less. Therefore, a linear servo actuator still corresponds the linear actuator format.

How do they work?

Actuators make a motor move in lines rather than circles. That is why it can be used in various forms, for instance, hydraulic or pneumatic. In other words, its main details are a linear actuator motor, a screw which goes down and up the cylinder with a tube.

The pros and cons of actuators

Servo-actuators vs. linear actuators – both have its pros and cons. Let us take a look at solely linear products. First of all, let us mention that the price corelates completely with the purpose and materials of the product. Of course, you will complain about non-reliant on a power source device if it is cheap. To say nothing, about the actuator being operated only manually.

You will leave only a positive feedback if you buy electro-mechanical goods as they are more long-lasting and share many pros of solely mechanical devices. Automatic or electric linear actuators, in fact, can boast of a lesser number of parts, high-speed work.

The servo goods are usually pretty cheap and smooth while rotating. You can reach a higher speed than with the help of the usual linear actuators. However, installing servos can cost you a fortune in comparison with the whole device. What is more, in some cases you will hardly reach a perfect thermal performance.

Differences between actuators

Servo has a circuit board inside and it’s tied to the motor and to the limit switches and potentiometer so it kind of does all the work for you. There is no need to switch out the battery to change the direction of the shaft until it hits the end board limit switch. No additional setups required. Heads-up for the servos in linear actuators vs linear servo actuators battle.

All you need to do with the servo is to switch the polarity with the battery the way positive to positive, negative to negative. It connects with the knob directly and it kills power at either limit switch. The next pleasant thing about this setup is this has a five-volt BEC built into the circuit board. You may send, for instance, 12 volts from the battery and it sends in five volts to the servo controller.

Linear Servo Actuators also provide you with the speed control and possession control. The knob position is going to find out how fast the actuator moves, while control of the knob determines the way the shaft will move on the linear actuator. Not that this is too complex, some people try to go simple on their projects. Therefore, they prefer simple linear actuators.

What to choose?

Undoubtedly, it depends on the price of the product and the type of performance you need to achieve. Take a good look at your project and decide whether you need a customization ability of the simpler linear actuators or an automatic of the servos. It turns out only you can put an end to the “Linear vs servo actuator” battle.

Why progressive automations?

Choosing the right shop is another extremely important step in order to achieve the perfect productivity. The diversity and a wide range is a key factor for you to make a right choice. That is why prefer stores with high-quality goods.

Although different from the first sight, servo vs linear actuator turned out to be an unsolved issue. There are both common and divergent features that make them unique, suitable for various kinds of jobs. It is up to you to choose the best.

About the Author: Zack Walker

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