The Relationship Between “Nominal Pressure” and Pressure Terms Related to Lightweight Design and Manufacture of Hydraulic Cylinders

Lightweight design and manufacture of hydraulic cylinders is receiving increasing attention in construction machinery and vehicle engineering. Hydraulic cylinders, designed based on some current standards such as JB/T 10205-2010 hydraulic cylinder, have a common issue that they need to be built with a large size. This “thick and heavy” is not conducive to improving equipment performance and achieving energy conservation and emission reduction. This paper identified the root causes leading to that issue and managed to make clear the interrelation between terms used in the “nominal pressure” system and the lightweight design and manufacturing method of hydraulic cylinders. A set of novel specifications to design and test hydraulic cylinders have also been proposed which adopts the “rated pressure” as the base parameter, after referring to some related standards. Furthermore, this approach would solve the lightweight problem of hydraulic cylinder manufacturing and lay a reliable foundation for the promotion of hydraulic cylinder technology in China.