Why is it important to monitor the temperature of hydraulic fluid?

Monitoring the temperature of hydraulic fluid is crucial primarily to prevent fluid degradation. Hydraulic fluids are designed to operate within specific temperature ranges, and exceeding these limits can lead to chemical breakdown. High temperatures can cause the fluid to oxidize or degrade, resulting in reduced lubrication properties, increased viscosity, and the formation of sludge and varnish. This degradation not only harms the fluid itself but can also lead to increased wear and tear on hydraulic components, reduced efficiency, and potential system failures. Therefore, maintaining the fluid temperature within optimal limits is key to ensuring the longevity and reliability of the hydraulic system.