Basic concept of hydraulic system

Hydraulic system theory

The concept in hydraulic system is to utilize liquid power or hydraulic power. By hydraulic power of liquid, a small force can be converted to a larger force, only by changing the area of liquid surface.

The formula is F2=F1*(A2/A1).

F2= output power, A2= liquid area in output or work section, F1=input power, A1=liquid area in input section. When A2>A1, F2 is greater than by a multiplying factor A2/A1 with F1.

                                                         Fig: Hydraulic pressure theory

Characteristics of hydraulic liquid in hydraulic system

Hydraulic theory is applied in many industrial applications and machinery. From simple wire cutter to heavy equipment like excavator, garbage truck, heavy-duty lorry, crane use this theory.

For hydraulics fuel, mineral oil or water is used. The characteristics of a good hydraulic fluid are Viscosity, Compressibility, Wear Resistance, Oxidation Stability, Thermal Stability, Filterability, Rust and Corrosion Protection, Foam Resistance, Seal Compatibility, Demulsibility.

                                                           Fig: Hydraulic wire cramping tools