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Pneumatic has a carbide industry. Many things can be done with air pressure and a remote control.
oil is slightly compressible 0.5 % at 70 bar. but air is compressible. so to get the required pressure pneumatics require more energy source than hydraulics also there are some limitations for pneumatics in terms of force.
600 bar
Built in jacks, etc, hydraulic lifting suspension, auto door hood or boot opening, etc etc etc Adjustable air ride suspension and tires.
The mass of air in one cubic centimeter is the air pressure of the place.
My thoughts go like this...(from watching 'Scrapheap Challenge"0 plus a little basic knowledge of physics. 1/ Pneumatics involve the movement of pistons and what not via the medium of compressed air or air under pressure. 2/ Hydraulics involve the movement of pistons and what not via the medium of compressed fluids or fluid under pressure. 3/ Fluid is denser than gas (compressed air). I believe hydraulics can handle far heavier loads than pneumatics. Pneumatics would appear to use a lighter more flexible medium than hydraulics. In answer to your question, I believe hydraulics would be far more effective at manipulating heavy loads versus pneumatics. However, pneumatics would be a more flexible system than hydraulics. Hows that?
Hydraulic , the jack uses fluid under pressure to raise the cylinder , releasing the pressure allows the cylinder to retract. Pneumatics is a similar concept using air pressure.
a difference in pressure (differential pressure). For example putting air in a tire (I know its pneumatics and not hydraulics but it is the same concepts.) the air tank is holding 110 lbs of pressure and when you connect the hose to a tire with 25 lbs the air is going to flow from the tank to the tire. or from high pressure to low pressure.
You measure it with an aneroid gauge.
Pneumatics is the when you use compressed air to move a pistion, a pistion could be virtually many things. ---- It is just like a hydraulic system but instead of a fluid you use air as the working fluid.
They are gases, usually air.
One similarity is that they both use fluids. Both gasses and liquids are fluids. the two are also compressible.