90L130MA5NN80R3F1FC5GBA353524 sauer danfoss pump

Hydraulic pump cavitation can significantly impact the efficiency and longevity of high-pressure systems. It occurs when the pressure in the pump drops below the vapor pressure of the hydraulic fluid, causing the formation of vapor bubbles. These bubbles can collapse violently, leading to harmful effects like erosion, noise, and reduced performance. To mitigate cavitation in high-pressure hydraulic systems, consider the following strategies.
90-L-130-MA-5-NN-80-R-3-F1-F-C5-GBA-35-35-24
90L130MA5NN80R3F1FC5GBA353524
First, ensure that the hydraulic fluid is kept at an adequate temperature. High temperatures can lower the fluid’s viscosity and increase its vapor pressure, making cavitation more likely. Maintaining the fluid temperature within an optimal range can help reduce the risk of vapor bubble formation.

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Second, optimizing the inlet conditions can significantly help. It is essential to maintain a sufficient Net Positive Suction Head (NPSH) to ensure that the pump operates effectively. This involves designing the suction line properly, such as minimizing bends and ensuring a straight path to the pump to reduce turbulence and pressure drop. It is also critical to ensure that the distance from the fluid reservoir to the pump is as short as possible.
Third, consider using a pump with a lower rotation speed. While this might lead to a decrease in overall flow rate, it can also reduce the suction pressure requirements, thereby decreasing the likelihood of cavitation. Similarly, utilizing pumps designed for high-performance and low-cavitation environments can enhance system reliability.
Additionally, enhancing the overall system design by selecting larger pipes can help reduce fluid velocity and, consequently, the pressure drop. Larger pipes allow for smoother fluid flow, which can minimize the turbulence that contributes to cavitation.
Furthermore, check the hydraulic fluid for any impurities or contaminants that could change its properties and increase the likelihood of cavitation. Regular maintenance to filter out dirt and water can help sustain the fluid’s stability.