Which unit is responsible for supplying oil to the jack assembly in hydraulic systems?

The hydraulic power unit is the component specifically designed to supply oil to the jack assembly in hydraulic systems. Its primary function is to provide hydraulic fluid under pressure to operate the hydraulic jacks and perform lifting tasks. The hydraulic power unit typically consists of a reservoir that holds the hydraulic fluid, a pump that moves the fluid, and associated components such as filters and pressure switches.

In the context of hydraulic systems, while a generator produces electrical power and a compressor generates compressed air, neither is involved in the hydraulic lifting process. Similarly, a pneumatic unit operates using air pressure rather than hydraulic fluid; therefore, it does not play a role in supplying oil to a hydraulic jack. The hydraulic power unit is essential for maintaining the required pressure and flow of hydraulic fluid, ensuring the efficient operation of the jack assembly.