How to judge the internal leakage of oil cylinder

To judge the internal leakage of the oil cylinder, Pacific Auto Network first puts the oil cylinder in place to ensure that the oil cylinder is not subjected to any load and will not retract (to prevent the oil cylinder from leaking in case of an accident). Then, shut down the machine, remove the tubing with the rod cavity, and press the oil cylinder unloading switch to pressurize the oil cylinder (do not press the cross switch). If there is oil flowing out from the oil port with rod cavity, oil will leak inside the cylinder. If there is no oil coming out, we should consider that there is something wrong with other links.

The oil cylinder, namely the hydraulic cylinder, is a kind of linear motion actuator, and its output force is directly proportional to the effective area of the piston and the pressure difference on both sides. Its function is to convert hydraulic energy into mechanical energy. The input of hydraulic cylinder is the flow and pressure of fluid, and the output is the speed and force of linear motion. The piston of the hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is limited.

Hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy of reciprocating linear motion. Hydraulic cylinder is basically composed of cylinder body and cylinder head, piston and piston rod, sealing device, buffer device and exhaust device. Buffer device and exhaust device depend on the specific application, and other devices are essential.

(Photo/Text/Photo: Pacific Auto Network Li Linwei)