The press brake buyer is very confused when they saw this quotation. For example, supplier A told him to use 100 tons bending machine,supplier told him to use 125 tons bending machine.it is very difficult for buyer to decide to which one.after all,their price is different.

Actually,there are a formula. as long as you understand this, you can count by your self.

65 x S x S x L /  V = your pressure.

S is your metal thickness,the unit is mm.

L is the metal thickness, the unit is m

V is the width of press brake bottom die. Some people use 10 x S while other people use 8 x S. but we strongly advise you to use 8 x S.because we worried that the press brake can not bend in special situation.