Comparison between hydraulic and pneumatic systems
Comparison between hydraulic and pneumatic systems
Both pneumatics and hydraulics are applications of fluid power. Pneumatics uses an easily compressible gas such as air or a suitable pure gas—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 (550 to 690 kPa). Hydraulics applications commonly use from 1,000 to 5,000 psi (6.9 to 34.5 Mpa), but specialized applications may exceed 10,000 psi (69 Mpa).
Advantages of pneumatics
Simplicity of design and control—Machines are easily designed using standard cylinders and other components, and operate via simple on-off control.
Reliability—Pneumatic systems generally have long operating lives and require little maintenance. Because gas is compressible, equipment is less subject to shock damage. Gas absorbs excessive force, whereas fluid in hydraulics directly transfers force. Safety—There is a very low chance of fire compared to hydraulic oil. Newer machines are usually overload safe.
Simplicity of design and control—Machines are easily designed using standard cylinders and other components, and operate via simple on-off control.
Reliability—Pneumatic systems generally have long operating lives and require little maintenance. Because gas is compressible, equipment is less subject to shock damage. Gas absorbs excessive force, whereas fluid in hydraulics directly transfers force. Safety—There is a very low chance of fire compared to hydraulic oil. Newer machines are usually overload safe.
Categories:
hydraulics,
Pneumatic,
Pneumatics System
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