ERR100BLS2520NNN3S2CPA1NAAANNNNNN piston pump

Hydraulic pump cavitation is a common issue that can severely impact the performance and longevity of fluid systems, especially in high-flow applications. Cavitation occurs when there is a drop in pressure at the pump inlet, causing dissolved gases in the fluid to form bubbles. These bubbles collapse violently as pressure returns to normal, causing shock waves that can damage pump components and decrease efficiency. Here are some steps to effectively troubleshoot and mitigate cavitation in hydraulic systems.
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Understand the Causes of Cavitation

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The first step in troubleshooting cavitation is identifying its causes. Common factors include:
Inadequate Fluid Supply: Insufficient fluid levels can lead to low inlet pressure.
Thermal Effects: High fluid temperatures can reduce the fluid’s ability to hold gases, increasing the likelihood of cavitation.
Inlet Design: Sharp bends or restrictions in the inlet piping can cause turbulence and pressure drops.
Pump Location: Pumps situated too far above the fluid reservoir can experience a drop in inlet pressure.
Check the System Design
Examine the hydraulic system design to assess potential cavitation-inducing elements. Ensure that the pump is positioned correctly relative to the reservoir and that the piping is appropriately sized and configured. Avoid sharp bends, and instead use gentle curves or larger diameters to reduce pressure drops. Additionally, consider whether the pump’s specifications align with the application’s flow requirements.
Measure Inlet Pressure and Flow Rate
Use pressure gauges and flow meters to measure the actual inlet pressure and flow rate. Inlet pressure should be above the pump’s NPSH (Net Positive Suction Head) requirement. If the measured inlet pressure is significantly lower than required, investigate the causes.
Evaluate Fluid Properties