I have a hydraulic cylinder, 180mm in diameter and 870mm in height/depth, 100mm piston/stroke. I am going to build a hydraulic press machine from that cylinder, what specification of motor/dynamo and oil pump (how many bar of pressure) do I need in order to build a 250ton hydraulic press machine ? If the cylinder won't work for 250ton force, what dimension of cylinder do I need in order to successfully build my 250ton hydraulic press and what kind of motor and oil pump do I need ? Thanks in advance for those whose giving away the information to me ;)