A linear actuator is a type of electric motor, which develops force and motion linearly. It is a device, used to generate controlled physical linear displacement. There are various means of achieving this linear displacement. It moves the heads in and out over the platters in a straight line. The coil moves in and out on a track surrounded by the stationary magnets. The primary advantage of the linear design is that it eliminates the head azimuth variations that occur with rotary positioning systems. A linear actuator does not rotate the head as it moves from one cylinder to another, thus eliminating this problem.

Linear air pumps are designed to deliver high volume of steady airflow at low-pressure ranges. These pumps are of low energy consumption and perform with low operation noise. It requires no lubrication and transfer air without any contamination. It has steady airflow. It is oil free and does not generate any pollution. It is quiet and generates low vibration. It consumes very less energy. It is provided with thermal protection and simple to maintain. These pumps are used in many industries including aeration, air purification, air sampling, gas analyzer, liquid agitation, medical equipment and wastewater treatment.

Linear ball bearings are used in spherical parts to separate moving parts along a straight line. Linear ball bearing and its associated accessories can be used to construct economic profile rail guides of particularly simple design for a wide variety of applications. In addition to the standard versions of the linear bearings, corrosion resistant versions are also available for some.

Linear bearings are used primarily where somewhat desires to be moved along a straight line with high accuracy. The object may also need to be returned to its origin with high repeatability. Linear bearings come in a variety of styles and have wide load capacities.