Why Four-Column Hydraulic Presses Work Well: Hydraulic Principle and Industries
Four-column hydraulic presses rely on Pascal's law: pressure on an enclosed liquid is transmitted equally in all directions. Hydraulic drives are used in machine tools, metallurgy, construction and farm machinery, vehicles and light industry.
A four-column hydraulic press works on Pascal's law: pressure applied to an enclosed liquid is transmitted undiminished in all directions. Hydraulics are used from simple drives to high-precision control systems.
Where hydraulics are used (examples from the original article)
| Industry | Examples |
|---|---|
| Machine tools | Grinders, milling and planing machines, broaching machines, presses, four-column presses, shears, modular machines |
| Metallurgy | Electric furnace and rolling-mill control, open-hearth charging, converter and blast-furnace control, strip guiding and constant-tension units |
| Construction machinery | Excavators, loaders, truck cranes, bulldozers, scrapers, graders, rollers |
| Agricultural machinery | Combine harvesters, tractors, ploughs |
| Vehicles | Off-road vehicles, dump trucks, aerial work platforms, fire engines |
| Light industry | Injection molding machines, rubber vulcanizers, paper, printing and textile machines |
The original article states that about 85% of machine-tool drive systems use hydraulic transmission and control.
SANSEN four-column presses: hydraulic presses, e.g. the bottom-up four-column hydraulic press and AS202K four-column punching press.
Adapted from an article published on SANSEN's original Chinese website (sansendg.com) on 2021-03-16. The text was edited and restructured; technical content follows the original.