Front matter 7 Graph (7) Air Consumption of Tube or Steel Pipe (For one cycle) Graph (8) Required Air Volume of Cylinder and Piping . The piping length is the length of the steel pipe or tube that connects the cylinder with the switching valve (solenoid valve, etc.) . For the dimensions (bore size and O.D.) of the steel tubing, refer to SMC “Best Pneumatics 2004” Vol. 6 catalog. Obtain the cylinder’s air consumption and its required air volume. Step 4 In equipment that used a cylinder, air consumption is the volume of air that is consumed in the cylinder, or in the piping between the cylinder and the switching valve, every time the switching valve operates. This is necessary for selecting a compressor and for calculating the running cost. The required air volume is the volume of air that is necessry for operating a specified load at a specified speed, and it is necessary for selecting the F.R.L equipment or the size of the upstream piping. Cylinder’s air consumption and its required air volume. Max. piston speed (inch/s) Required air volume (l /min (ANR)) Required air volume (l /min (ANR)) Operating pressure (PSI) 1000 100 10 1 0.1 1000 100 10 1 0.1 20 15 10 2 5 25 75 125 50 100 150 Bore size (in) 2.00 1.50 1.25 1.06 0.88 0.75 0.56 0.44 Piping length (inch) Air consumption (l (ANR)) Air consumption (l (ANR)) 100 400 300 200 80 60 40 20 10 Operating pressure (PSI) 25 75 125 50 100 150 1.00 0.50 0.37 0.33 0.27 0.25 0.179 0.16 0.13 0.12 0.08 Tube I.D. (in) 1000 1000 100 100 10 10 1 1 0.1 0.1 0.01 0.01 0.001 0.001 Model Selection