Hydraulic Station ManufacturerIntroducing...Hydraulic CylinderReasons for Pressure Anomalies

Hydraulic Pumps and Hydraulic Motors

1. Prolonged use of hydraulic pumps and motors has led to severe internal wear and significant leakage, resulting in low volumetric efficiency. This, in turn, causes the hydraulic pump to output insufficient flow and the system pressure to be low.

2. The engine's low RPM and lack of power have resulted in insufficient system flow and low hydraulic system pressure.

3. Incorrect directional assembly of the hydraulic pump, causing the pump to fail and the system to lack pressure.

Hydraulic Control Valve

During the operation of customized hydraulic cylinders, if the pressure does not rise or fall as it should, it is often due to a malfunctioning directional valve, causing the system to remain unloaded or to continue at high pressure.

2. Obstructions in the damping hole of the overflow valve, burrs on the main valve core, and foreign matter between the valve core and the valve hole or clearance can cause the main valve core to jam. In this case, the hydraulic oil output by the hydraulic pump flows directly back into the oil tank through the overflow valve, and the pressure oil line is short-circuited with the return oil line, resulting in the system having no pressure. If the burrs or foreign matter cause the main valve core to jam, the system pressure will rise significantly. When the valve cores of the overflow valve or directional valve become stuck, the valve core movement becomes erratic, causing the actuating components to intermittently function. When checking the system pressure, it will exhibit unstable pressure readings.

3. Systems with one-way valves can still experience issues if the valve is installed upside down, leading to insufficient system pressure.

4. Leaks within the custom cylinder system, such as severe leaks between the valve core and the valve body bore, can also prevent the system from reaching the desired pressure.

Section 3: Other Aspects

1. Low hydraulic oil level, excessively thin suction pipe, and a clogged suction filter with debris can cause excessive suction resistance in the hydraulic pump, leading to insufficient system flow and low pressure.

2. Issues such as the return oil pipe being above the liquid surface, and the suction oil pipe not being properly sealed, causing air leaks, have led to unstable system pressure.