Function and Structure of pneumatic hydraulic cylinders

As the main structure of pneumatic hydraulic cylinders, pneumatic hydraulic cylinder barrels need to withstand dual pressures of gas and liquid, thus requiring high strength, high stiffness, and reliable sealing. The inner hole is usually processed using precision machining techniques such as boring, reaming, rolling, or honing to ensure smooth sliding of the piston, seals, and supports while reducing wear. In addition, the cylinder barrel needs to form a closed working volume together with the cylinder head and sealing system device, and some designs also need to meet welding performance requirements.

Working principle of hydraulic cylinder barrel

The working process of pneumatic hydraulic cylinder barrel is divided into four steps:
Gas supply: Compressed gas enters the cylinder through the gas path and drives the piston to move.
Cylinder drive: Gas pressure causes displacement of the piston while compressing the liquid inside the hydraulic cylinder.
Hydraulic transmission: The pressurized liquid pushes the hydraulic cylinder piston, converting pneumatic force into hydraulic pressure.
Force output: The hydraulic cylinder piston outputs force through a connecting device to achieve mechanical motion control.