Pneumax - Hauptkatalog Page 1077
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Appendix Dimensioning Solutions for pneumatic automation General Catalogue Cylinder air consumption The air consumption corresponds to the volume of air that the cylinder uses in a complete cycle ( stroke out and back in ) at a specific pressure. Consumption = Pa x C x (A+b) Pa= Absolute pressure (bar) C= Cylinder stroke (dm) A= see tab. 1 (dm2) b= see tab. 2 (dm2) Air consumption is measured in Normal-liters (Nl) which correspond to the volume that a specific quantity (mass) of gas would fill at atmospheric pressure. Calculation example: ISO 15552 cylinder - 1319 series: Supply pressure 6 bar (Pa=7 bar) stroke 50mm (C=0,5 dm) Ø63 (A=0,31157 dm ) Rod Ø=20 mm (b=0,28017 dm ) Consumption = 7 (bar) x 0,5 (dm) x (0,31157+0,28017) = 2,072 Nl (In order to calculate the air consumption for a specific number of cycles it is sufficient to multiply the above value for the number of cycles) Surface difference cylinder piston / rod Ø Ø cylinder A Ø cylinder - Ø rod A Ø8 0,00502 dm2 Ø8-Ø4 0,00377 dm2 Ø 10 0,00785 dm2 Ø 10 - Ø 4 0,00659 dm2 Ø 12 0,01130 dm2 Ø 12 - Ø 6 0,00848 dm2 Ø 16 0,02010 dm2 Ø 16 - Ø 6 0,01727 dm2 Ø 20 0,03140 dm2 Ø 20 - Ø 8 0,02638 dm2 Ø 25 0,04906 dm2 Ø 25 - Ø 10 0,04121 dm2 Ø 32 0,08038 dm2 Ø 32 - Ø 12 0,06908 dm2 Ø 40 0,12560 dm2 Ø 40 - Ø 14 0,11021 dm2 Ø 50 0,19625 dm2 Ø 40 - Ø 16 0,10550 dm2 Ø 63 0,31157 dm2 Ø 40 - Ø 18 0,10017 dm2 Ø 80 0,50240 dm2 Ø 50 - Ø 14 0,18086 dm2 Ø 100 0,78500 dm2 Ø 50 - Ø 18 0,17082 dm2 Ø 125 1,22656 dm2 Ø 50 - Ø 20 0,16485 dm2 Ø 160 2,00960 dm2 Ø 63 - Ø 20 0,28017 dm2 Ø 200 3,14000 dm2 Ø 63 - Ø 22 0,27357 dm2 Ø 80 - Ø 22 0,46441 dm2 Ø 80 - Ø 25 0,45334 dm2 Ø 100 - Ø 25 0,73594 dm2 Ø 100 - Ø 30 0,71435 dm2 Ø 125 - Ø 30 1,15591 dm2 Ø 125 - Ø 32 1,14618 dm2 Ø 160 - Ø 40 1,88400 dm2 Ø 200 - Ø 40 3,01440 dm2 tab.1 A APPENDIX Piston surface area tab.2 Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice. A|8
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