90L180KA5CD80TCC8J03NNN424224 sauer danfoss pump

Cavitation is a common issue that can severely affect the performance and longevity of hydraulic pumps in oil and gas systems. This phenomenon occurs when the pressure in a fluid drops below its vapor pressure, leading to the formation of vapor bubbles. When these bubbles collapse, they can cause significant damage to the pump and other components of the fluid circuit. To effectively troubleshoot hydraulic pump cavitation, it is essential to understand its causes, symptoms, and methods for resolution.
90-L-180-KA-5-CD-80-T-C-C8-J-03-NNN-42-42-24
90L180KA5CD80TCC8J03NNN424224
Identifying Symptoms of Cavitation

80006462
The first step in troubleshooting cavitation is to identify its symptoms. Common indications include:
Unusual Noise: A loud, knocking, or grinding sound coming from the pump can indicate cavitation as vapor bubbles collapse within the pump.
Vibration: Increased vibration levels can result from cavitating conditions, which may lead to mechanical failures.
Reduced Performance: A drop in flow rate or pressure may signal that cavitation is occurring, affecting the overall efficiency of the system.
Fluctuating Readings: If gauge readings are erratic, it might be a sign that cavitation is disrupting the flow.
Understanding the Causes of Cavitation
To effectively troubleshoot cavitation, it’s essential to understand the underlying causes:
Low Inlet Pressure: Insufficient pressure at the pump inlet can lead to cavitation. This may be due to long piping runs, restrictions, or inadequate supply from the reservoir.
High Fluid Temperatures: Elevated fluid temperatures reduce the fluid’s density, thereby lowering the vapor pressure, which can promote cavitation.
Pump Design and Selection: An improperly sized or selected pump for the specific application can lead to cavitation. Pumps designed for specific flow rates may perform poorly if the requirements change.