How does port size affect the speed of operation of a hydraulic ram?
Of course the port size can make a difference in the speed of the actuation. It controls the speed at which the fluid enters the cylinder and therefore the speed at which the cylinder becomes pressurized. I suspect that the program you used assumed a port size; there is no other way it can make an accurate calculation. I assume you either specified the pressure or it also assumed that, since it is the other big variable. I would think heat build up is more a function of the number of times you cycle the ram. If you have specific performance requirements you should have them in your specification and let the manufacturer determine port size or other variables you don’t need to control.
