plate rooling machine

We have a rolling machine with 3 rollers; the bottom has two rollers with diameters of 315 mm and one top roller with a diameter of 360 mm. I want to calculate the required force to bend a 32 mm thick plate which is 3,000 mm wide. The rolling machine is connected to a 25 HP motor with a gear box ratio 70:1.Center distance between bottom roller is 498 mm.

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