What is the primary function of hydraulic actuators?

The primary function of hydraulic actuators is to convert hydraulic energy into mechanical motion. This process is fundamental to the operation of hydraulic systems, where pressurized fluid is used to perform work. Hydraulic actuators typically include devices such as hydraulic cylinders and hydraulic motors, which harness the energy from high-pressure fluid to produce linear or rotary motion, respectively.

When hydraulic fluid is directed into the actuator, it causes movement by exerting force on a piston or rotor, enabling the actuator to perform tasks such as lifting, pushing, or rotating loads. This conversion of energy is what allows hydraulic systems to achieve significant power in a compact size, making them ideal for a wide variety of applications in machinery and automation.

The other options, while relevant to hydraulic systems, do not represent the core function of hydraulic actuators. Storing energy, cooling fluid, and regulating temperature are all important system considerations but are not the primary purpose of actuators within that system.