Cylinder classification, cylinder classification number

Classification of cylinders


The cylinder is a component used to achieve linear motion and perform work. Its structure and shape come in many forms, and there are many classification methods. The commonly used ones are as follows.
①According to the direction in which compressed air acts on the end face of the piston, it can be divided into single-acting cylinders and double-acting cylinders. The movement of the single-acting cylinder in only one direction is driven by air pressure, and the piston is reset by spring force or gravity;the round-trip movement of the piston of the double-acting cylinder is all accomplished by compressed air.
②According to structural characteristics, it can be divided into piston cylinder, vane cylinder, membrane cylinder, gas-liquid damping cylinder, etc.
③According to the installation method, it can be divided into ear-mounted cylinders, flange-type cylinders, pin-type cylinders and flange-type cylinders.
④ According to the function of the cylinder, it can be divided into ordinary cylinder and special cylinder. Ordinary cylinders mainly refer to piston single-acting cylinders and double-acting cylinders;special cylinders include gas-liquid damping cylinders, membrane cylinders, impact cylinders, boosted cylinders, stepping cylinders, rotary cylinders, etc.







Cylinders that perform reciprocating linear motion can be divided into four types: single-acting cylinders, double-acting cylinders, diaphragm cylinders and impact cylinders.
① Single-acting cylinder: There is a piston rod at only one end. Air is supplied from one side of the piston to accumulate energy to generate air pressure. The air pressure pushes the piston to generate thrust and extends, and returns by spring or self-weight.
②Double-acting cylinder: Air is supplied alternately from both sides of the piston to output force in one or two directions.
③Diaphragm cylinder: A diaphragm is used instead of a piston, which only outputs force in one direction and is returned by a spring. It has good sealing performance but short stroke.
④Impact cylinder: This is a new type of component. It converts the pressure energy of the compressed gas into the kinetic energy of the piston's high-speed (10-20 meters/second) movement to perform work.
⑤Rodless cylinder: The general term for cylinders without piston rods. There are two categories: magnetic cylinders and cable cylinders.
A cylinder that swings back and forth is called a swing cylinder. The inner cavity is divided into two by blades, and air is supplied to the two cavities alternately. The output shaft swings with a swing angle of less than 280°. In addition, there are rotary cylinders, gas-liquid damping cylinders and stepping cylinders.








Cylinder classification number


Usually each company determines the name of the series according to its own situation, and then adds the bore/stroke/accessory type, etc. We take SMC cylinders as an example:


There are many types of SMC cylinders. According to the bore size, they can be divided into micro cylinders, small cylinders, medium cylinders and large cylinders.
According to functions, they are divided into: standard cylinder, space-saving cylinder, cylinder with guide rod, double cylinder, rodless cylinder, etc.
Labels are basically SMC internal definitions, but there are also rules to follow.


1. MDBB stands for standard tie rod cylinder.
2. D represents the cylinder plus magnetic ring.
3. 32 represents the bore of the cylinder, which is the diameter.
4. 50 represents the stroke of the cylinder, which is the length of the piston rod extending out.
5. Z represents new model
6. M9BW represents the induction switch, which is installed on the cylinder.






If the cylinder model starts with MDBL, MDBF, MDBG, MDBC, MDBD, MDBT, it means that it represents different installation methods. So let me introduce what these letters mean?


SMC's cylinder numbers are classified according to principles
1. L stands for axial foot installation
2. F represents the front end cover rod side flange type
3. G represents rear end cover side flange type
4. C stands for single earring CA
5. D stands for double earrings CB
6. T stands for central trunnion type

The above is the classification of cylinders and the introduction of cylinder classification numbers. If you want to know more relevant information, please log in to Sunway Pneumatic www.diancifa.cc.