How are pneumatics better than hydraulics?

Answer 1

it is because pneumatics is more flexible and easy to use rather than hydraulic[ebolton] There is no need to have a reservoir or return piping. The working "fluid", air, is non-toxic and non-flammable.

Poster below is correct. Air systems typically have a tank that is the analog of a hydraulic reservoir.[ebolton]

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Actually there is need for air reservoir in industrial pneumatics systems.

Hydraulics can handle more powerful aplications than pneumatics for the same overall dimensions, or can be more compact for the same power.

Answer 2

Hydraulics are suitable for higher forces & precise motion than pneumatics.

This is because hydraulic systems generally run at significantly higher pressures than pneumatics systems. Movements are more precise (repeatable) because hydraulics use an incompressible liquid to transfer power whilst pneumatics uses gases. Pneumatic systems have some advantages too. They are usually significantly cheaper than hydraulic systems, can move faster (gas much less viscous than oil) and don't leak oil if they develop a leak.

Answer 3

Each one has its own advantages. Generally hydraulics are more powerful while pneumatics are less expensive overall and simpler to maintain. Pneumatics are also generally cleaner environmentally. Pneumatics can also be pre-pressurized while hydraulics cannot.

Hydraulics tend to be better for large things, like heavy machinery. Pneumatics tend to be better for small things, like cars, robots, and Legos.

Answer 4

pnematics works on air and hence it is readily available in the atmosphere.

implies no need of any special storage tank.

it is low in cost than its counterpart the hydraulics.

it is much more compact than hydraulics.

it is very suitable for power transmission when distance of transmission becomes higher than mechanical and lower than the electrcal.

it gives better contol over other transmission sources such as the mechanical and the electrical.

Answer 5

the biggest advantage is the amount of power in a given space. Hyd systems typically operate at 2000psi and up, compared to about 80psi for pneumatic. Also, since fluid is non compressible, the moment distance can be linear. Many aircraft, and industrial equipment now use electric servos instead of hydraulics. Biggest problem with hydraulics is leaks. 2nd biggest problem is continuous power consumption to the pump.

Lots of air power is used in industry, so it is the easiest way to move or clamp anything, with nothing more than an air cylinder and a valve.

Each system has it's place to do different things.

Source(s):I'm a mechanical engineer, it's what I do

Answer 6

they have fewer parts