How to determine the output of CKD pneumatic cylinders? Just look at these indicators

1、 Analysis of the core indicators of CKD Xikai cylinder output

The output of CKD Xikai cylinder (i.e. thrust/tension) directly determines whether the equipment can push the load, and the following five indicators are the key to calculation:

1. Working pressure: Usually measured in MPa or Bar, the standard industrial pressure is 0.4-0.6MPa (refer to ISO 6431). For example, under a pressure of 0.5MPa, the theoretical thrust of a cylinder with a diameter of 32mm is 402N (calculation formula: thrust=pressure x piston area).

2. Cylinder diameter: The diameter of the piston directly affects the output size. For every 10mm increase in cylinder diameter, the output increases by approximately 78.5% (circular area formula π r ²). Common cylinder diameters include 20mm, 32mm, 50mm, etc., corresponding to a thrust range of 50N-2000N.

3. Load rate: The actual output needs to be multiplied by the load rate (usually taken as 50% -70%). For example, a cylinder with a theoretical thrust of 402N can actually use only 241N at a 60% load rate (data source: Fundamentals of Pneumatic Technology).

2、 Other key factors and optimization suggestions

1. Friction loss: The piston seal will lose 5% -15% of its output due to friction (Festo experimental data), and choosing low friction materials (such as polyurethane) can reduce losses.

2. Gas supply efficiency: When the length of the trachea exceeds 10 meters, the pressure drops by 0.01 Bar per meter (according to the Japanese SMC manual). Suggest shortening the pipeline or increasing the pipe diameter.

*Example calculation *:

If you need to drive a load of 500N, choose a cylinder with a diameter of 40mm and a pressure of 0.5MPa:

-Theoretical CKD hydraulic cylinder=0.5MPa × π× (20mm) ²=628N

-Actual output=628N × 60% (load rate) -10% (friction loss) 339N

-Solution: Change the cylinder diameter to 50mm or increase the pressure to 0.6MPa.

1、 The relationship between cylinder diameter and thrust

The size of the cylinder diameter can affect the combustion capacity in the cylinder, thereby affecting the thrust. Generally speaking, the larger the cylinder diameter, the more gas mixture the cylinder can accommodate, the higher the combustion efficiency, and the relatively greater the thrust. However, it is not accurate to judge the thrust of a cylinder solely based on its diameter.

2、 The influence of valves

In addition to the size of the cylinder bore, the diameter and number of valves also affect the thrust of the cylinder. Opening the atmospheric valve or increasing the number of valves can increase the intake volume, making it easier for the gas mixture to flow into the cylinder for combustion, thereby generating greater thrust.

3、 CKD also has a significant impact on the thrust of the cylinder due to the opening of the cylinder and the displacement. The larger the intake volume, the higher the concentration of the mixture in the cylinder, the more complete the combustion, and the stronger the thrust.

4、 The proportion also has a significant impact on the thrust of CKD pneumatic cylinders. The higher the proportion of air in the gas mixture, the more oxygen can be obtained for combustion, generating greater power.

In summary, the thrust of CKD cylinder is not only related to the size of the cylinder diameter, but also influenced by various factors. In order to obtain greater thrust, we need to comprehensively optimize multiple factors such as valves, intake volume, and gas mixture based on actual conditions to improve engine performance.