Views: 124 Author: Site Editor Publish Time: 2022-09-08 Origin: Site
With the continuous update and development of technology, the most popular pneumatic actuators and cylinder devices are generally composed of pistons and rods, mainly linear or linear motion. Such linear pneumatic actuators can be used in a variety of applications, including industrial sectors, factory automation equipment and packaging processes, high-end chemical applications, etc. When buying this type of cylinder, you will encounter a question, that is, whether to choose a double-acting cylinder or a single-acting cylinder? Next, we will focus on the trends, typical applications, and advantages and disadvantages of these two types of products.
Single-acting cylinder
A single-acting cylinder means to generate thrust in a single direction. The internal piston will bounce back through an installed spring or some other means, such means can include mechanical movement, etc. This type of cylinder has a port at the top that compresses air into the cylinder and moves the piston to the desired position. There are mainly two types of single-acting cylinders, namely push type and pull type. The former refers to the thrust generated by the cylinder during application, so that the piston can move. The latter refers to the pulling force generated by the cylinder during application, which then pulls the cylinder to move. So what are the advantages of single-acting cylinders? First, it has a simple design and a streamlined structure. Second, the product size is usually relatively compact, so the cost of valves and piping can be reduced. Third, compared with double-acting cylinders of the same size, single-acting cylinders can save nearly half of the air consumption. Similarly, single-acting cylinders also have certain limitations. First, one side of the return spring of the cylinder is exposed to the air, which means that foreign matter may enter the cylinder and cause malfunction or shorten the service life.
Double acting cylinder
As the name suggests, a double-acting cylinder refers to a pneumatic device that produces thrust in both directions. Both ports of the double-acting cylinder may receive air to move the piston. Generally, the applied air pressure will generate thrust at one end, and pull the product at the other end. Obviously, the thrust and impact force required during the movement of a double-acting cylinder far exceeds that of a single-acting cylinder. What are the advantages of double-acting cylinders? This type of cylinder is designed based on ISO standards, so it can be used in a wider range and can provide more size and bore options. However, it should be noted that the air in the double-acting cylinder cannot simply be kept in the middle position, but needs to be connected to the pneumatic slave cylinder to provide a constant feed, and the long-stroke cylinder requires sufficient guidance of the piston rod.
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