Today when we say high pressure hydraulics we mean oil but in the beginning it was water.
In the earliest hydraulic systems, dating back to the 19th century, water was the fluid used to transmit pressure. It worked, of course, but it was not ideal: it was corrosive to metals, froze in winter, evaporated easily under stress. And above all, it did not lubricate.
It was in the early decades of the twentieth century that mechanical engineering began to move towards mineral oils, initially adopted in the automotive industry and then in heavy industry. More thermally stable, less aggressive, with natural lubricating properties, oils radically transformed the application possibilities of the technology.
Pascal’s law — which has governed all this since 1647 — was the same. What changed was the fluid. And it is thanks to this step that hydraulics was born, capable of operating today at 700, 1000, even 4000 bar.
In lifting, bolting, pushing, testing. Wherever there is a need for control.