Reason for hydraulic oil circuit overheating

1、 Oil problem: overlooked source of heat generation
Hydraulic oil is like the blood of equipment, and when it deteriorates or mixes with impurities, the friction coefficient will soar. Actual testing shows that the temperature rise rate of oil containing metal debris is twice as fast as that of clean oil. Common triggers include:
The filter element has exceeded its service life (it is recommended to check every 500 hours)
Mixing different types of oil produces chemical reactions
Insufficient oil level leads to a decrease in circulation heat dissipation efficiency
2、 System overload: excessive pressure beyond design frenzy
When the actuator encounters abnormal resistance, the continuous high-pressure operation of the pressure valve will generate a large amount of heat energy. For example:
1. Rail jamming: Failure to lubricate the rail in a timely manner can increase cylinder pressure by 40%
2. Seal aging: The leaking oil seal forces the pump station to double its operation
3. Parameter setting error: Fast forward speed setting exceeds the fuel supply capacity of the oil pump
3、 Cooling failure: collective strike of cooling system
The cooling system of a CNC lathe is like a human sweat gland, and the failure of these components can leave heat nowhere to escape:
The cooling fan is wrapped in oil stains (with a 60% decrease in air volume)
• Scale formation in the water circuit of the cooler (reduced heat transfer efficiency by 35%)
When the ambient temperature exceeds 35 ℃, auxiliary heat dissipation is not activated
The dust thickness on the surface of the hydraulic oil tank reaches 2mm, which affects natural heat dissipation