Guide on How a Pneumatic Cylinder Works

These devices, also called air cylinders, are used in air brakes, automatic door closures and in automobiles helping the engine to rotate the wheels. The pneumatic cylinder has three parts, a shaft, a rod and a plunger. The plunger is attached to the rod which is inserted into the shaft of the cylinder. The assembly of plunger and the rod moves in and out of the cylinder building the air pressure inside. The purpose of plunger is to take the impact of this air pressure.


These cylinders come in various sizes starting from 2.5mm in diameter to 400 mm typically. Cylinders with higher diameter such as 1000mm are used to replace hydraulic applications.

There are two types of cylinders, single acting and double acting. In a single acting cylinder assembly, the movement of piston is only in one direction, which is when the pressure is applied. The piston is not retracted once the pressure is removed. It uses a spring attachment to push the piston back into position when the air pressure is removed. The disadvantage of this set up is that one needs to apply more pressure to move the piston since it has to overcome the spring load also.

How To Prepare For Painting

The key to a good paint job on any wall is preparation. Without preparation you may be able to do a good job painting, but it is highly unlikely that you will be able to do a great job. It’s very difficult, but you need to resist the temptation of taking shortcuts with the preparation. In the long run, good preparation saves you more time than taking shortcuts without preparation.

What will you need to prep the walls for paint? – The tools that you will need are:

  • A bucket that is filled with warm soap and water
  • Set of screwdrivers


Take accessories off the walls – One thing you will need to do is to take off anything that you would have to paint around. I’m talking about curtains, picture frames, posters, switch plates, and any other hardware that you may have on your wall that you do not want to get paint on. If you do not do this you may very well regret it later, so do yourself a favor and be sure to do this troublesome task. It may be a smart idea to be sure that the power is shut off at the breaker from this point on of prep time, because you are going to be cleaning next to outlets and such.