A pneumatic cylinder is a mechanical device that uses compressed air to produce linear motion. It consists of a cylindrical chamber with a piston inside, which moves back and forth when air pressure is applied. This motion can be used to perform various tasks, such as lifting, pushing, or pulling objects in industrial applications. These cylinders are commonly found in manufacturing and automation systems, where they help automate processes and improve efficiency. They are favored for their simplicity, reliability, and ability to generate significant force while being relatively lightweight compared to hydraulic systems.