What Causes the Automatic Descent of the Hydraulic Cylinder?

[LaCecilia]

The reasons for the automatic descent of the hydraulic cylinder are as follows: 1. Piston failure: The movement speed of the hydraulic cylinder is the ratio of the flow input to the cylinder to the effective area of the piston. Due to leakage, the actual flow pushing the piston movement is reduced, thus slowing down the movement speed of the hydraulic cylinder. In this case, the piston should be replaced to ensure a reasonable gap between the piston and the cylinder barrel. If the piston sealing ring is damaged, it should be replaced with a new one. 2. Directional valve damage: Severe internal leakage in the directional valve, where the sealing relies on the gap between the valve core and the valve hole. Due to various reasons, the gap between the valve core and the valve hole increases, causing the pressure oil from the pump to flow from the high-pressure chamber to the low-pressure chamber through the internal annular gap after entering the directional valve, significantly reducing the flow rate of the oil passing through the directional valve. As a result, the flow entering the hydraulic cylinder is reduced. Therefore, the user needs to replace the directional valve.