What is the maximum acceptable level of water in hydraulic fluid, measured in PPM?

The maximum acceptable level of water in hydraulic fluid is crucial because the presence of water can significantly affect the performance and reliability of hydraulic systems. Water contamination can lead to issues such as corrosion, reduced lubrication effectiveness, and the formation of sludge, which can block filters and valves. Therefore, maintaining the proper level of water is essential for the longevity and efficiency of these systems.

In hydraulic systems, an acceptable water content is commonly set at 500 PPM (parts per million). This threshold is determined based on industry standards and the engineering specifications of hydraulic components. Keeping the water content below this level helps in ensuring optimal performance and helps prevent premature wear and failure of hydraulic systems.

Understanding the importance of controlling water levels allows operators to implement measures such as regular fluid testing, using desiccant breathers, and ensuring proper sealing to prevent contamination.