Can the cylinder be positioned accurately when it is fully retracted? That is to say, will there be an error every time the cylinder retreats?

There must be an error, the key depends on where you want to use it. However, it is not recommended to control the formation by forming the right cylinder return. Due to the influence of air pressure, such as the poor return effect when the air pressure is unstable or too low, the influence of working environment, such as dust and foreign objects, and the use situation, such as mechanical failure of load, the cylinder strength is sometimes insufficient to return, and it may be stuck in the middle, so it is difficult to control the accurate position of the cylinder. If it is necessary to use this form, it is recommended to use the cylinder forming ratio.