Hydraulics

engineering · liquids · machines · forces

Liquids are incompressible. Unlike air, liquids like oil and water don't squeeze down smaller when you push on them. This special quality lets hydraulic systems transfer force powerfully from one place to another.

Tiny pumps, mighty power. A small hydraulic pump can move enormous weights by pushing liquid through pipes and cylinders. The liquid amplifies the force, making it possible for one person to lift something that would normally need many people.

Heavy equipment lifters. Hydraulic systems power diggers, bulldozers, cranes, and dump truck beds. These machines use hydraulics to scoop, lift, and move materials that would be impossible to handle otherwise.

Brakes that stop safely. Your car's brake system is hydraulic, meaning it uses liquid to transfer your foot's pressure to the brake pads. This lets you stop smoothly and safely every time you drive.

Controls for precision work. Hydraulic systems let operators control heavy machinery with delicate precision, like moving a massive crane arm gently into exactly the right spot on a construction site.