First of all, the first piece of important issues worthy of consideration is the production of parts you want, point is to buy a table to complete the shortest processing tasks, the minimum tonnage of the machine. Carefully consider the materials, processing of grades and maximum thickness and length. If most of the work is the thickness of 16 gauge,Roll forming machine the maximum length of 10 feet of low-carbon steel, then the free bending not more than 50 tons. However, if in a large number of die forming with bottom, and perhaps should consider a 150 tonnage machines. Well, assuming the thickest material is 1 / 4 inch, 10-foot free bending of 165 tons, with bottom die bending (bending correction) at least 600 tons. If most of the work piece is 5 feet or less certain, almost half the tonnage, which greatly reduce cost of ownership. Part length determine the specifications of the new machine is very important.

Second, You should also consider changing this torsion machine torsion changes that may occur. In the same load, 10 feet machine table and change the slider appears flexible machine is 5 feet 4 times. That is, the shorter the machine requires less pad adjustment can produce qualified parts. Reduce the gasket to adjust it to shorten the preparation time. Material Grade is also a key factor. Compared with the low-carbon steel, stainless steel, the load is usually required to increase by 50%, while most brands of soft aluminum reduction of 50%. You can always get from the press brake machine manufacturers tonnage table that appears in different thickness, different materials under each foot length of the estimated tonnage required.