Several important parameters for cylinder type and size selection

Third, the cylinder bore stroke

The stroke is the error distance between the piston's extension and retraction. Some people will expose the cylinder itself to the stroke, which is wrong. The bore diameter is the diameter of the inner wall of the cylinder tube. The outer diameter of the cylinder can also estimate the inner diameter. Under the same air pressure, the larger the cylinder diameter, the greater the force.

The standard cylinders commonly used in China have the same function. The main difference is the shape and size of the installation. This is the basic outline drawing of a standard cylinder. Confirm the installation distance of the cylinder KB and confirm the total length of the A+ stroke cylinder. The installed accessories are not required. The confirmed size is also different.

Fourth, the standard cylinder flange plate installation needs to confirm the size, the front flange installation needs to confirm: the distance from the flange to the red line of the piston rod and the mounting hole distance of the flange plate BD, BF . If it is the same as the post-installation, as long as the distance from the flange to the top of the cylinder is ensured, the installation hole pitch of the cylinder itself is not important at this time.

5. The standard cylinder FA diagram is installed with the CACB accessory to ensure the distance between the diameter hole of the DE hole and the center point to the top of the cylinder piston. The installation hole pitch of the cylinder itself does not matter.

Sixth, the standard cylinder CA drawing with LB foot installation needs to confirm the distance of AC + stroke installation hole distance. To facilitate the installation of the bracket, confirm the middle distance and the telescopic length from the bottom of the bracket to the piston rod.

Seven, standard cylinder LB diagram TC and TCM mid-swing attachment bracket installation to ensure the distance from the TC intermediate shaft to the top of the cylinder

Eight, standard cylinder TC diagram standard cylinder accessories are the most diverse, different accessories can ensure the installation and use of cylinders in various working environments, can achieve unexpected results.

9. The cylinder structure consists of a cylinder, an end cap, a piston, a piston rod and a seal .

1. The inner diameter of the cylinder barrel represents the output force of the cylinder. The piston should make a smooth reciprocating sliding in the cylinder, and the surface roughness of the inner surface of the cylinder should reach Ra0.8μm . The CM2 cylinder piston adopts a combined sealing ring to realize two-way sealing, and the piston and the piston rod are linked by pressing riveting without using a nut.

2. The end cap end cover is provided with an intake and exhaust port, and some also have a buffer mechanism in the end cap. A seal ring and a dust seal are provided on the rod side end cover to prevent air leakage from the piston rod and prevent external dust from entering the cylinder. A guide sleeve is arranged on the rod side end cover to improve the guiding precision of the cylinder, to bear a small amount of lateral load on the piston rod, to reduce the amount of downward bending when the piston rod is extended, and to prolong the service life of the cylinder. Guide sleeves typically use sintered oil-containing alloys, forward-lead copper castings. End caps used to be malleable cast iron. In order to reduce weight and prevent rust, aluminum alloy die-casting is often used, and micro-cylinders are made of brass.

3. The piston piston is a stressed part in the cylinder. In order to prevent the left and right chambers of the piston from suffocating each other, a piston sealing ring is provided. The wear ring on the piston improves the guiding of the cylinder, reduces the wear of the piston seal and reduces the frictional resistance. The wear ring length is made of polyurethane, polytetrafluoroethylene, cloth synthetic resin and the like. The width of the piston is determined by the size of the seal and the length of the necessary sliding portion. The sliding part is too short to cause early wear and seizure. The piston is made of aluminum alloy and cast iron, and the piston of the small cylinder is made of brass.

4. Piston rod The piston rod is the most important part of the cylinder. It is usually made of high carbon steel, hard chrome plated, or stainless steel to prevent corrosion and improve the wear resistance of the seal.

5. The seal of the part where the seal ring rotates or reciprocates is called a dynamic seal, and the seal of the stationary part is called a static seal. The connection methods of the cylinder tube and the end cover are mainly as follows: integral type, riveted type, threaded type, flange type, tie rod type

6. When the cylinder is working, it is necessary to lubricate the piston by the oil mist in the compressed air. There are also a small number of lubrication-free cylinders.

Several important parameters for the above cylinder model and size selection are introduced here by Xiaobian . If you have other questions , you can check the other cylinder knowledge on this page.