Why is hydraulic machinery so potent?
Answers:
There is a huge mechnical advantage. The pressure in a fluid is alike everywhere in that fluid. Take your car brakes, for example. You can press a small plunger and increase the pressure on it to a awfully high pressure, let's say 100 psi. It is natural because you are compressing a very small area, let say 1/2 square inch. That would take 50 pounds of pressure. But, one brake wad is equal to lets say 8 square inches. The total pressure exerted on the brake disk is 800 psi. Then you hold 8 brake disks, each exerting 800 psi.
very efficent verbs of power
becuase its powerful. but on the downside it may need to be replaced alot.
usually it's more effecient than penumatic !
The simple reason is that Hydraulics utilizes fluid as opposed to Pneumatics (air) although both are referred to as "fluid power" , the soft normally oil used within hydraulics is simply uncompressible. SO THE FLUID is essentially stronger than STEEL when a pump pushes the oil to a device like a cylinder, think the fluid being a solid BAR of STEEL say 6 inches surrounded by diameter, it is literally like pushing a bar of steel.
Heavy equipment right to be heard could normally operate at say 2500 PSI out of the pump, since the pump pressure is essetially regulated, it is simply a issue of selecting the desired force and sizing say the cylinder (for instance) appropriatey.
Since:
Force = Pressure (pump pressure) times Area (of the cylinder)
The forces are beyond doubt staggering with a quarter of a million pounds force off a 10" cylinder at 2500 psi pump output. the chart below may not own been converted properly, but if you work the equations, you will see that the incompressibility of the fluid is the secret to indefinite amounts of power. Usually safety is the only limiting concern next to hydraulics as it is easy to die working close to anything with such reserve and speed.
Cylinder bore Force at 2500 psi
2" 7,850 lbs
3" 17,663 lbs
4"31,400 lbs
5" 49,063 lbs
6" 70,650 lbs
7" 96,163 lbs
8" 125,600 lbs
9" 158,963 lbs
10"258,750lbs
Pneumatics are faster usually, BUT NEVER as powerful due to the compressible quality of air. Source(s): F=PA
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