What is the primary purpose of using hydraulic fluid in systems?

The primary purpose of using hydraulic fluid in systems is to transfer power and energy. Hydraulic fluid is essential in transmitting power through the system, allowing for the movement and control of various components, such as cylinders and motors. When pressure is applied to the hydraulic fluid, it transfers that force throughout the system, enabling machinery to perform work effectively.

While lubrication, cooling, and preventing wear are important functions that hydraulic fluid can contribute to, they are secondary to the main role of power transmission. Lubrication helps reduce friction between moving parts, cooling aids in managing the temperature of machinery to prevent overheating, and minimizing wear and tear is crucial for maintaining equipment longevity. However, these functions support the central function of power transfer, which is vital for the operation of hydraulic systems.