Single-acting devices consist of a large plunger, or piston, into which oil (or air in a pneumatic cylinder) is pumped.
Single Acting Cylinders:In single acting cylinders the fluid is pressurized from only one side of the cylinder during both the expansion as well as the retraction process.Double Acting Cylinders:In the double acting cylinders, the pressure from the fluid is applied in both the directions.Any double-acting cylinder may be used as a single-acting unit by draining the inactive end.By hamza_siddiqui@hotmail.com
A single-acting cylinder operates by using fluid power to extend the piston, which is then retracted by an external force such as a spring or gravity. When fluid pressure is applied, it pushes against the piston rod to extend it, performing work in one direction. The return stroke is accomplished by the external force, as there is no fluid pressure acting in the opposite direction.
Single action actuating cylinder means that fail action (open or close) is accomplished by spring mounted on the opposite side of pneumatic cylinder and normal operation by airDouble acting cylinder means that both, opening and closing, manoeuvres are accomplished by pneumatic cylinder.
Reciprocating compressors are either single- or double-acting. In single-acting machines the compression takes place on only one side of the piston; double-acting machines use both sides of the cylinder for compression.
A differential cylinder has a large piston that requires a greater amount of oil to displace the cylinder, thus allowing greater uniformity of force than a typical single-acting cylinder.
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Single-acting? You mean like a single cylinder engine, like in my lawn mower? The biggest difference (besides the obvious "an opposed engine has more cylinders" is that an opposed engine has more torque. On a single-cylinder four-stroke, you've got the cylinder moving under input energy--the burning gasoline--for one stroke, and under stored energy from the flywheel for three strokes. If you have a two-cylinder engine, you have two strokes where the engine is moving under input energy--each cylinder has one--and two strokes using stored energy. If you have a four-cylinder engine, each stroke is moving under input energy.
The function of a graduated cylinder in the laboratory is to measure volumes.
single acting: actively driven by hydraulic fluid pressure in only one direction, passively returned in the other direction by another force (e.g. springs, gravity)double acting: actively driven hydraulic fluid pressure in both directions
The working pressure acts from one side in single acting actuators while in double acting actuators strokes generating by each side.
a single cylinder