Hydraulic machines are devices that use liquids, usually oil or water, to transmit power.
They work based on Pascal’s principle, which states that pressure applied to a confined fluid is transmitted equally in all directions.
Hydraulic systems can multiply force, making it easier to lift heavy loads.
These machines are widely used in industries, construction, and transportation.

A common example of a hydraulic machine is the hydraulic lift, used in garages and elevators.
Another example is the hydraulic press, which is used to shape, crush, or compress materials.
Hydraulic brakes in vehicles use liquid to transfer force from the brake pedal to the brake pads.
Hydraulic systems can also be found in aircraft landing gears and excavators.

Hydraulic machines consist of components like a pump, cylinders, pipes, and valves.
The pump creates pressure in the liquid, which is transmitted to the cylinder.
The cylinder converts the fluid pressure into mechanical force to perform work.
Valves control the flow and direction of the fluid within the system.

Hydraulic machines are preferred because they provide smooth and precise control.
They can lift or move very heavy loads with relatively small input force.
Maintenance is important to prevent leaks and ensure the system works efficiently.
Hydraulic fluids must be clean and free from air bubbles for proper functioning.

These machines have revolutionized industries by making work faster, safer, and more efficient.
Understanding hydraulic machines is essential for engineering, manufacturing, and mechanical applications.