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When multiple abnormal phenomena occur simultaneously in the hydraulic system, how to determine the root cause?

2025-04-28

Hydraulic system failures with multiple symptoms usually have a common root cause: oil contamination may cause axial piston pump wear (increased noise), valve core sticking (abnormal operation) and filter blockage (insufficient flow) at the same time. System air intake will generate noise and reduce the elastic modulus of the oil, resulting in weak actuator action and pressure fluctuations. Excessive oil temperature will accelerate seal aging (increased leakage), reduce viscosity (increased internal leakage), and promote oil oxidation (producing acidic substances). The methods for determining the central fault source include: Time correlation analysis-which symptom appears first may be the root cause. Commonality analysis-find common factors that can explain all abnormalities. Parameter trend-check historical operating data to find the parameters that deviate from normal first. Oil detection-comprehensive oil analysis can reveal a variety of potential problems. For example, the simultaneous occurrence of loud pump noise, high oil temperature and weak cylinder may be caused by excessive internal leakage in the pump, resulting in insufficient flow and energy loss.

Rexroth Piston Pump

Rexroth Piston Motor

Rexroth Axial Piston Pump

Rexroth Axial Piston Motor

Hydraulic Axial Piston Pump

Construction Machinery Piston Pump

Construction Machinery Piston Motor

Industrial Machinery Piston Pump

Agricultural Axial Piston Motor

Harvesting Machinery Piston Pump

Harvester Axial Piston Motor

Bent Axis Piston Motor

Variable Axial Piston Pump

Fixed Displacement Piston Motor

Hydropower Plant Hydraulic Cylinder

Water Conservancy Hydraulic Cylinder

Rexroth Piston Pump

Rexroth Piston Motor

Rexroth Axial Piston Pump

Rexroth Axial Piston Motor

Hydraulic Axial Piston Pump

Construction Machinery Piston Pump

Construction Machinery Piston Motor

Industrial Machinery Piston Pump

Agricultural Axial Piston Motor

Harvesting Machinery Piston Pump

Harvester Axial Piston Motor

Bent Axis Piston Motor

Variable Axial Piston Pump

Fixed Displacement Piston Motor

Hydropower Plant Hydraulic Cylinder

Water Conservancy Hydraulic Cylinder

When multiple abnormal phenomena occur simultaneously in the hydraulic system, how to determine the root cause?

When multiple abnormal phenomena occur simultaneously in the hydraulic system, how to determine the root cause?