What is the primary function of a jacking oil pump?

The primary function of a jacking oil pump is to supply high-pressure oil to lift the shaft before rotation. This is a critical process in machinery, particularly in large rotating equipment like turbines and compressors. The jacking oil pump provides a thin film of oil that lifts the shaft off its bearings, creating a hydrodynamic cushion that prevents metal-to-metal contact during startup. This helps to minimize wear on the components and ensures a smooth startup process.

In contrast, circulating oil systems are responsible for the continuous flow of oil throughout the machinery for lubrication and cooling but do not specifically address the lifting action required during initial rotation. Oil temperature regulation and filtration of impurities, while important aspects of lubrication systems, do not pertain to the specific role of a jacking oil pump, which is focused primarily on preparing the machinery for safe operation at startup.