Cylinder model selection basis

The output force of the cylinder has nothing to do with the air stroke. It mainly depends on the cylinder diameter. Once the cylinder diameter is determined, you can find the corresponding cylinder with your ideal stroke. That is to say, 280kg is the condition you gave. According to this condition, the minimum model you need to choose is a cylinder with a bore of 100mm and a working pressure of 0.8MPa. The model is 100*75, 100*100/100*125... and you have the stroke Choose for yourself.