Why should we pay attention to the cylinder when buying a CNC bending machine The cylinder is used to hold hydraulic oil, and the CNC bending machine is a kind of machine for bending sheet metal. When we use the CNC bending machine to bend the material, we must bend in the middle section. If we are bending on one side, then when the cylinder on one side touches the workpiece, the cylinder on the other side will continue downward until it touches the lower die, the two cylinders begin to pressurize. If the cylinder is working like this, one side high and the other side low, the cylinder of the CNC bending machine will soon be damaged and leak oil. Secondly, try not to choose a two-cylinder CNC bending machine, because the working life of such a CNC bending machine is too short. When the workpiece is in the middle of the CNC bending machine and the cylinder is on both sides, the bending of the slider is affirmative; in addition, due to the reaction force gen...