Home Solutions

What is the reason for the high oil temperature in the hydraulic system? How to effectively control it?

2025-04-28

Excessive oil temperature is a common problem in hydraulic systems. The main reasons include: the system pressure is set too high or it is overloaded for a long time, and energy loss is converted into heat energy. Excessive internal leakage in the axial piston pump or motor reduces the volumetric efficiency. Insufficient cooling system capacity, radiator blockage or fan failure. Unreasonable oil tank design, insufficient heat dissipation area or too fast oil circulation. Improper oil viscosity selection, too high increases flow resistance, too low increases internal leakage. Effective measures to control oil temperature include: reasonably setting working pressure to avoid unnecessary energy loss; ensuring the normal operation of the cooling system and regularly cleaning the radiator; optimizing the oil tank design and adding auxiliary cooling when necessary; selecting oil with appropriate viscosity; repairing or replacing severely worn pumps, valves and other components. When the oil temperature continues to exceed 70°C, it should be considered abnormal and the root cause should be found.

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

What is the reason for the high oil temperature in the hydraulic system? How to effectively control it?

What is the reason for the high oil temperature in the hydraulic system? How to effectively control it?