HYDRAULICS AND PNEUMATICS

Hydraulics and Pneumatics is the technology that deals with the generation, control and transmission of power using pressurized fluid. This subject is designated as FLUID POWER, and is world wide accepted.The word Hydraulics is derived from the Greek word “HYDOR” and means “Water”. This comprised all things in affiliation with ‘ Water’.The word Pneumatics is derived from Latin Word “PNEUMO” means “ Breathing”.It can be said that Fluid Power ( Hydraulics and Pneumatics ) is the muscle that moves Industry. This is because its application in industry is unlimited .

· It jacks up an automobile( Hydraulic jack)
· Drills out teeth· Launches space ship
· Control submarines
· Mines coal and ores
· Moves earth ( earth moving equipment like excavators, bull dozers, borewell drills etc.,
· Harvests crops
· Presses
· Machine tools
· Material handling equipment
· Transportation
· Construction


Why Fluid Power?
Fluid power provides flexible and easy control of variable force, distance and speed. Fluid power can be varied from a delicate touch of a few grams to a gigantic force of 36000 tons or more. It provides constant torque at speed of nearly 100 km/hr within a few centimeter or give a creeping speed of a fraction of an cm/min.Hydraulic system use liquids such as petroleum oils, water, synthetic oils etc. The first hydraulic fluid to be used was water because it is readily available but it has been replaced by oils.

Pneumatic system use air as the gas medium because air is very abundant and can be readily exhausted into the atmosphere