This article needs additional citations for
A hydraulic press is a
The hydraulic press depends on
Pascal's law: Pressure on a confined fluid is transmitted undiminished and acts with equal force on equal areas and at 90 degrees to the container wall.
Pressure of fluid due to the application force F1
Resulting force F2 on the larger cylinder due to the pressure of the fluid. With A1 and A2 being the areas of cylinder 1 and 2 respectively.
A small effort force acts on a small piston. This creates a pressure which is transferred through the hydraulic fluid to apply a greater force on the larger piston.