This section provides an overview for pneumatic cylinders as well as their applications and principles. Also, please take a look at the list of 11 pneumatic cylinder manufacturers and their company rankings.
Table of Contents
A cylinder is a mechanical component that pushes or pulls a rod by supplying or discharging air or oil, causing a change in pressure inside the cylinder.
There are two main types of cylinders: pneumatic cylinders and double-acting cylinders. The single acting type can control force only when pushing or pulling. For example, in the case of pushing only (single acting extrusion type), the pushing force is determined by the pressure and cross-sectional area of the air supply. When the air is exhausted, it returns to its original state due to the force of the internal spring. Conversely, when only pulling (single acting retracting type), the rod retracts when air is supplied, and when air is exhausted, the rod is pushed out by the force of the spring. In contrast, in the double-acting type, both pushing and pulling can be controlled to move the rod and apply force.
In general, double-acting cylinders are used in many cases. For example, pneumatic cylinders and double-acting cylinders are used depending on what happens when the supply of air or other power source is stopped unintentionally.
Double-acting cylinders remain in the same state when the air supply stops, so they cannot be moved by hand in the event of an accident. Pneumatic cylinders always stop on the side where the spring acts when the air supply is stopped. The side on which the spring acts is the safe side for people, and is used to reduce damage to people and equipment in the event of unexpected trouble.
To control pneumatic cylinders, a solenoid valve with three ports is usually used, since a single port is required to supply and exhaust air.
The most significant feature of a pneumatic cylinder is that it stops on the side where the spring force acts, if the air supply stops, and it is used as a countermeasure against unforeseen circumstances. In many cases, especially with large bore cylinders with large thrust, single-acting cylinders are used as a safety measure.
The thrust (pushing force) of a cylinder is determined by the supplied air pressure and cylinder diameter. However, even with the same air pressure and cylinder diameter, the thrust force differs between pushing and pulling. Note that in the pushing case, the area that can be pushed becomes narrower due to the presence of the cylinder rod, and the thrust is about 10% weaker than in the pulling case.
Although the lineup of pneumatic cylinders is smaller than that of double-acting cylinders due to the difference in frequency of use, there are various variations of pneumatic cylinders, such as slim-type, thin-type, and guided types.
*Including some distributors, etc.
Sort by Features
Sort by Area
Number of Employees
Newly Established Company
Company with a History
This is the version of our website addressed to speakers of English in the United States. If you are a resident of another country, please select the appropriate version of Metoree for your country in the drop-down menu.