How to Choose the Right Linear Actuator

The electric linear actuator is something different than the electric motor. The main difference between the two is the fact that it converts rotational motion to linear one. If you’ve ever used a hydraulic actuator, then probably you know that they have lots of common issues: leaks, worn seals, pressure changes caused by the pump, etc. Meanwhile, an electric linear actuator represents a clean and safe device for any apps you might have, replacing all the problems.

Naturally, there are countless options when it comes to the design of the linear actuators. You can choose between worm drive ones, acme screw, tubular linear, ball screw or linear side ones. The decision can become quite complicated, which is why you need some help. Whether you are buying from a real store or an online one (such as powerjackmotion), you should ask for professional help before spending money on a linear actuator.

How to Choose a Linear Actuator

1. Force

Consider the application you need a linear actuator for. Check the weight of the object that will be pushed or lifted in order to assess how much force you need for the actuator. Usually, a small one will handle small objects, while a larger one will be suitable for heavy duty situations.

2. Efficiency

You should also think about the amount of friction that is involved in your application. If that’s an application that needs high efficiency, this means that the actuator has to overcome the entire amount of friction. As such, a high precision linear one should be perfect for you if you have a high demand. Otherwise, a less expensive actuator should do the job just fine.

3. Stroke Length

The stroke length refers to the distance of a linear actuator that can be stretched inside the equipment. This triggers the extent of the retraction of the actuator and it’s also important for choosing the right type.

4. Power Source

Depending on the availability of the power source, you can choose between a DC and an AC actuator. If you decide on getting a DC linear motion actuator, then you have to know that the 12 and 24V options are the most popular.

5. Speed

What you need to find out is the time required for the actuator to finish the task it has in just one stroke. Briefly, combine the speed of the actuator with the force that is generated by the motor. Generally, the high speed ones reach a speed of over 40 mm/s.

6. Work Environment

When choosing the right linear actuator, also think about work environment factors: the IP degree, the temperature, installation size and noise. You may actually need a silent actuator for a noiseless application, while for a waterproof work environment you should choose an IP66 one.