The following factors should be considered when selecting a hydraulic cylinder: Load characteristics - For heavy-duty applications, a reinforced cylinder with a larger piston rod diameter and a longer guide sleeve should be selected. Stroke length - For long strokes (>3m), the stability of the piston rod should be considered. A multi-stage telescopic cylinder or an additional intermediate support can be selected. Installation method - Depending on the force conditions, earring, flange or foot-mounted installation can be selected. Speed requirements - High-speed applications (>0.5m/s) require special buffering design to prevent terminal impact. Environmental conditions - Stainless steel cylinders should be selected for corrosive environments, and special sealing materials should be used for high-temperature environments. Accuracy requirements - Cylinders for machine tools require low friction and high guiding accuracy, and are usually equipped with displacement sensors. Special functional requirements - If intermediate positioning is required, a cylinder with mechanical locking can be selected. If space is limited, a compact cylinder can be selected. In addition, compatibility with existing systems, such as oil port size and working pressure, must also be considered.