The primary concern regarding the thermal stability of hydraulic fluid in an excavator operating in high ambient temperatures is the reduction in viscosity and the accelerated rate of oxidation of the fluid. Viscosity refers to the hydraulic fluid's resistance to flow. As the temperature of the hydraulic fluid increases, its viscosity decreases, meaning it becomes thinner and flows more easily. While this might seem beneficial, excessively low viscosity leads to several problems. First, it reduces the fluid's ability to maintain a lubricating film between moving parts, such as pistons and cylinder walls, leading to increased frict....
Log in to view the answer
