Hydraulic Cylinder Calculation Tools Note Our cylinders are tested at 1.5 your Working Pressure. So if your working pressure is 350bar we test at 525bar. The values are calculated to 90% of their theoretical values. 1. Calculate Cylinder Capacity Bore * Rod Working Pressure * Push Load Pull Load If you are human, leave this field blank. 2. Calculate Bore/Piston Or Rod Sizes Calculate Bore Or Rod Size Please choose Push/Pull Load Push Pull Choose Push to calculate bore size and choose Pull to Calculate the rod size Weight in Tonne Working Pressure bar / kg/cm2 Bore/Piston Diameter in mm Rod Diameter in mm If you are human, leave this field blank.