Linear Actuator – ALIO Industries

 

Linear Actuator

You can find linear actuator usability in various machine tools and industry-based items. Suitable examples can be printers, valves, drivers, and others. These linear actuators, in fact, are the control systems that help in the oscillation of the motion in a straight direction.

Various linear actuators are most of the time designed and manufactured for ease of repair and maintenance of industry-based accouterments. So, these actuators use linear force, as clearly understood by the name, to change the direction of circular motion to linear, whenever there’s a need. Or else, they only generate linear motion from the beginning.

Linear Actuator

 

How Does A Linear Actuator Work?

The rod inside the linear actuator motor simply extends and retracts in the linear direction. In simpler terms, it moves up and down like a slider on a track.

This motion is enabled and initiated by the lead-screw. So, when you are on the verge of making an educated decision, learn that this screw moves either anti-clockwise or clockwise. This manipulates the shaft, which is nothing but a nut on the screw.

This nut moves up and down as per the operationalization of the lead-screw. And hence, the whole mechanism ends up coaxing the slider on the track to move and create linear motion.

Moreover, the DC motor of these actuators runs at a voltage of 12V generally. However, other options might be available for better solutions like at ALIO Industries.

Also, more often than not, there’s a switch beside the motor to reverse the motor’s direction either from clockwise to anti-clockwise or vice-versa.

 

Where Are Linear Actuators Used?

Simply put, an actuator of any kind is a mechanical device that gets different things moving from one point to another. Thus, linear actuators famous for their linear motion are used widely across different industrial and small-scale sectors. Some examples are mentioned right below:

 

Repeated Movement That’s Linear: When the mechanical devices and tools are set to move from one point to another in a similar fashion and continuously, then linear actuators are contemplated to be highly reliable. Basically, these actuators match consistency and continuity in the movement of the devices to carry out various standardized operations.

 

Controlled Precision Movements: Usually, these electric linear actuators are used when the task performed by the device or tools is very crucial and needs to be free from human error. Within the strokes, the supervisor, thus, can control the level of precision that must be required. In fact, these actuators can be reprogrammed and help in repeating the same movements, with nano precision, carried by the different devices or machines inside a plant.

 

How Fast Are Linear Actuators?

Different driving mechanisms decide the speeding up capabilities of linear actuators.

 

Screws:

Lead screws are responsible for creating high heat, which slows down the maximum speed, but the ball screws which are smaller in size. So, they can accelerate a better speed.

 

Belt drives/rack & pinion

Linear actuators that are assembled with belt drives generate around 10 meter per second speed. On the other hand, rack and pinion drivers are responsible for about 5 meter per second speed.

 

Slider like actuators

These actuators have the potential to reach higher speed. But the slider is generally used for heavy load and thus slows down. However, in general, these slider-like actuators consist of speedy support in terms of linear motors, ball screws, rack and pinion mechanism, etc.

 

Linear motors

These motors cause no heat or friction. Hence, the speed is not limited. So, when these motors are combined with belt drives, then the actuator can reach up to 12 meter per second.

 

Types Of Linear Actuator

 

Hydraulic actuator

These actuators use hollow cylinders and hydraulic fluid, which is pressurized, possibly an oil. They are used for high pressure, rugged applicability, high power, and mechanical stiffness to move the piston in the desired direction.  

 

Mechanical actuator

These actuators help convert the rotating motion into the linear one. They can be powered by an internal motor or extensively by hands. These can be used for releasing the energy through lead screws, ball screws, wheel and axle designs, or cam.  

 

Pneumatic actuator

Either air or gas is used for pressurizing these actuators. They were designed possibly hundreds of years ago but are still applicable for modernized devices and motion needs like in sensors, dentistry, nail guns, door closers, switches, etc.  

 

Electric actuator

These actuators know how to convert electricity into kinetic energy for linear motion. They automate the applicability of dampers and valves. Moreover, they are run on current and can be operated or slaved through remote control if the user needs that.  

 

Magnetic actuator

For the industrial concern regarding safety, these actuators are considered as an educated choice. These are available in most of the devices for cleansing purposes. They use magnetic fields to sense the motion around them.

 

Advantages & Disadvantages Of Linear Actuator

Advantages

Disadvantages

Simplicity

The shaft and screw mechanism are prompt for jumpstarting and getting the work done within seconds or minutes. There’s even a switch that helps to regular the speed and the direction of the shaft and screw.

Lesser Range Of Motion

One of the demerits of using linear actuator is that it only operates for linear motions. When you are looking for an actuator that might move into any given direction, this will not be your first choice.

Variety

As discussed above, there are different types of linear actuators that are used in various industrial fields across the world. So, the industrialists and engineers do not need to depend on a single linear actuator, especially when they approach professionals like ALIO Industries.

Might Be Slower For Heavy-Duty Tasks

Some linear actuators are only used under oil or gas pressures. And when they are combined with lead screws, friction might be added in the mechanism. This will limit the maximum speed as heat is formed. Hence, tasks that require more speed and more load might not be possible.

Nano Precision

These actuators are most beneficial in performing tasks with nano precision, that is, each time the same task will bear the same results. Hence, the occurrence of an error in performing the same task repeatedly will be lesser.
 

Better Repeatability

This advantage is closely related to nano precision. In other words, these linear actuators are reliable for conducting tasks that have continuity and consistency in the key performing steps.