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Friday, August 9, 2013

Air Cylinders 101

What is an air cylinder?  It is a metal tube, sealed at both ends, with a rod and plunger inside.  When  air is introduced into an air port, the rod and plunger gets pushed up or down, according to where the air port is located.   The length at which the rod gets pushed out is referred to as stroke length.   Below are some diagrams on how two types of cylinders work.

This a diagram of  a single action air cylinder.
Click on picture to enlarge


This diagram represents a simplified description of a double action air cylinder.
Click on picture to enlarge.

This next diagram represents the double action air cylinder used in a pop up head application.  The weight of the head or prop resets the rod to the bottom of the cylinder.

Click on picture to enlarge. has a page on air cylinders here

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