Which type of fluid is generally avoided in hydraulic systems?

Water-based fluids are generally avoided in hydraulic systems primarily due to their tendency to promote corrosion and rusting of metal components found within the hydraulic machinery. Given that most hydraulic systems contain various metal parts, the presence of water can lead to significant wear and damage, ultimately resulting in system failures.

Additionally, water has a much lower viscosity compared to oil-based or mineral-based fluids, which can impact the efficiency of the hydraulic system. The lower viscosity means that the hydraulic fluid may not provide sufficient lubrication or may not transmit power effectively under pressure, leading to performance issues.

While oil-based, silicone, and mineral-based fluids each have their specific advantages—such as better lubrication properties and corrosion resistance—water-based fluids lack these essential characteristics, making them less suitable for most hydraulic applications. Thus, this preference for avoiding water-based fluids in hydraulic systems is a critical aspect of maintaining system efficiency and longevity.