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Pneumatics, a subsection of an area called fluid power, is the use of pressurized air to effect mechanical motion. more...
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Pneumatic power is used in industry, where it is common to have industrial factory unit plumbed for compressed air. It also has applications in, among other things, dentistry, construction, and mining. Pneumatic power users need not worry about hazardous leakages as the fuel is commonly just air, although other compressed gases, such as carbon dioxide, may be used.
Examples of pneumatic systems:
Pneumatic tools:
Pneumatic drill (jackhammer) used by road workers;
Pneumatic nailgun;
;
Pneumatic switches;
Pneumatic actuator;
Air compressors;
Vacuum pump;
Barostat systems used in Neurogastroenterology and for researching electricity;
Cable Jetting, a way to install cables in ducts;
Pneumatic mail systems;
Air brakes on buses and trucks;
Air brakes, on trains;
Air engines for pneumatically powered vehicles;
Lego pneumatics can be used to build pneumatic models;
Pneumatic Launchers, a type of spud gun;
Pneumatic air guns;
Holman Projector, a pneumatic anti-aircraft weapon;
Comparison to hydraulics
Both pneumatics and hydraulics are applications of fluid power. Pneumatics uses air, which is compressible, while hydraulics uses relatively incompressible liquid media such as oil. Most industrial pneumatic applications use pressures of about 80 to 100 pounds per square inch (psi) (500 to 700 kilopascals). Hydraulics applications commonly use from 1,000 to 5,000 psi (7 to 35 MPa), but specialized applications may exceed 10,000 psi (70 MPa).
Advantages of pneumatics
Clean
Air is used by a machine & is then exhausted to the atmosphere - no return line necessary.;
Any leaks will be of air (which is much less of a problem than oil leaks in Hydraulics).;
Availability
Air is freely available in the pneumatics;
Most factories are pre-plumbed for compressed air distribution - which makes it very easy to set up a manufacturing process;
Simplicity of Design And Control
Machines are easily designed using standard cylinders & other components. Control is as easy as its simple ON - OFF type control;
Reliability
Pneumatic systems tend to have long operating lives and require very little maintenance.;
Because air is compressable, the equipment is less likely to be damaged by shock. The air in pneumatics absorbs excessive force, whereas the fluid of hydraulics directly transfers force.;
Storage
Compressed Air can be stored, allowing the use of machines when electrical power is lost.;
Safety
Read more at Wikipedia.org
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