Hydraulic
Cylinders
A
hydraulic Cylinder is a mechanical actuator that uses the force created by a pressurized liquid in a sealed container. The hydraulic cylinders have a
variety of application such as in manufacturing machines, heavy construction machines
and garbage dump trucks. The fluid used in these cylinders is basically oil.
The back and forth movement of the piston inside the cylinder barrel exerts
pressure on the fluid and thereby produces force which is about ten times
greater than the force exerted on the fluid. A hydraulic cylinder can be
divided into following parts:
Cylinder
barrel: The main cylinder body is called cylinder barrel. Its main function
is to keep the cylinder pressure intact.
Cylinder
base or cap: Enclosed end of the cylinder is known as the cylinder base or
cap.
Cylinder head: The main function of the
head is to enclose the pressure chamber from the other end.
Piston:
The back and forth moving object inside the cylinder barrel is called piston.
Its function is to vary the pressure inside the barrel.
Piston
rod: Piston rod is basically a hard piece of chrome plated rod attached
with the piston that extends from the cylinder to the end of rod-head.
Seal
gland: seal gland is fixed at the cylinder head to prevent the leakage of pressurised
oil and to keep the pressure intact within the barrel.
There
are a lot of hydraulic cylinder manufacturers in the market that manufactures
different types of hydraulic cylinders with different operating pressure. Based
on its components and specifications, the hydraulic cylinders can be classified
into Plunger Cylinders or Ram Clylinders, Telescopic hydraulic cylinder
or Mulstistage Hydraulic Cylinders and Cable Cylinders.
or Mulstistage Hydraulic Cylinders and Cable Cylinders.
With
of so many choices available in the market, one might get confused while
selecting the appropriate hydraulic cylinder. In order to select an appropriate
cylinder one must consider the specifications such as bore diameter, maximum
operating pressure, rod diameter and stroke or the distance traveled by the
piston.
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