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What is a miniature linear actuator

You may be surprised to know that you interact with a miniature linear actuator in everyday machinery without knowing it. A micro linear actuator is vital for many motion control systems to move and control objects. 

Miniature actuators can be mechanical, electric, hydraulic, or pneumatically powered. Most of them consist of a basic construction with a base plate, runner with dual guides, and a stator. They work similarly to standard linear actuators, but miniature actuators are ideal for small spaces that need a significant payload. 

Are you ready to learn more about a tiny linear actuator’s purpose, use, and function? If so, consult the brief guide below.

Miniature Linear Actuators

Dimensions of Miniature Linear Actuators

A small linear actuator body is usually between 150mm and 1500mm. The short frame gives it a compact structure and convenient installation abilities for various functions. 

Because of the small linear actuator’s body size, they also have a micro stroke range. The stroke length can range from a few millimeters up to 50mm. Though the mini linear actuator has shorter strokes and a smaller size, it doesn’t produce as much force as a traditional linear actuator.

How Miniature Linear Actuators Work

Though several methods will power miniature linear actuators, most of them run on electricity. AC/DC electric motors of varying stroke lengths convert rotary motion to a linear one. In other words, the motors enable the actuators to push or pull in a straight line. 

Electric motors usually have a high-speed rotation. However, helical gearboxes slow the rotation speed to increase the actuators’ torque. A slower pace generates a greater torque, which helps a lead screw turn to generate the linear motion of the actuators’ drive screw or nut. Reversing the motors’ rotation direction also reverses the linear movement of the micro actuator.

Different Miniature Linear Actuator Applications

Linear actuators have a long history, with the agricultural industry being one of the first to use the component for farming equipment. Now, almost every industry uses linear actuators. 

Miniature actuators are no different. You can incorporate them in any application that needs linear motion but has weight or space restrictions, including the following.


Micro linear actuators are essential for robotics, whether the machinery is for robotic manufacturing or robotic competitions. Actuators and motors control every movement. For instance, an actuator within a gripper arm communicates with sensors to perform a clamping motion using the appropriate amount of force.


The car manufacturing industry often uses robotics to build vehicles. However, cars and trucks also contain miniature linear actuators to perform various functions, such as powering doors and moving windows up and down.

Home and Office

You can find a miniature linear actuator in many parts of your home and office. For instance, fold-up beds and tables you use as a space-saving solution incorporate actuators to move the furniture pieces. You can also find mini actuators in automatic recliners and remote-controlled consoles that push the TV out for better viewing.

Post time: Aug-22-2022