What do you need to know about linear actuators?

Click here for the Linear Actuator Calculator What is a Linear Actuator? An electric linear actuator is a device that converts the rotational motion of an AC or DC motor into linear motion. It can provide both push and pull movements.

What are the advantages of a column lift actuator?

Another advantage of a column lift is that the linear guiding is built into the structure of the actuator and does not need adding externally. Linear actuators usually don’t cope well with side loading (we discuss that later). Column lifts have their guiding system built in which is why they are better for some applications over others.

How does duty cycle rating of linear actuator work?

Duty cycle rating for a linear actuator is generally expressed as a percentage of “on-time” (the ratio of on-time to total time) or as distance traveled over a period of time. The duty cycle rating is expressed differently for different actuator types.

How are actuators tested in a temperature test?

In the temperature test, the actuators are tested to operate in extreme temperatures as well as to endure rapid changes in temperature. In most cases, tests are performed on the actuator to withstand going from a +100°C environment to -20°C repeatedly and still maintain full functionality.

How many screws do you need to remove an actuator?

There should be two or three screws holding it in place. A small universal might be needed to help remove the screws in awkward places. Once removed place the screws into a small container so they don’t get lost. Once all of the mounting screws have been removed the actuator should become loose.

How does a linear actuator in a clock work?

The screw turns either clockwise or counter-clock-wise and this causes the shaft, which is basically a nut on the screw to move up and down the screw as the screw turns. This is what creates the linear motion. The motors used are either AC or DC motors, most however run on 12v dc, but other voltages are also optional.

How do you install a new actuator on a car?

Install the new part in place as you insert the mounting screws by hand. Be careful not to cross thread the mounting screws because they thread into the plastic housing and can easily strip, (do not over tighten). Once all screws are in place firmly push the wiring harness connector back into the actuator.

Is it possible to back drive an actuator?

As a general rule Industrial Linear Actuators will not back drive, these will have a static load capacity listed in the catalog. Precision Linear Actuators generally will back drive by themselves and rely on the mounted motor to hold a load.