four roll digital hydraulic plate rolling machine with dual pre-bending, mod. mca the mca rolling machine line is the ideal machine to bend plate up to 10 mm thick and up to four metres wide. it is accurate, user friendly......four roll digital hydraulic plate rolling machine with dual pre-bending, mod. mca the mca rolling machine line is the ideal machine to bend plate up to 10 mm thick and up to four metres wide. it is accurate, user friendly and fast (plate advancement speed of six mt/min) and represents the best available on the market today. the mca also represents the ultimate in terms of design and innovation with advantages not available on other models. the leading edge is automatically calculated (when cnc is supplied) and this results in the shortest leading edge flat end on the market. the mca can roll the plate without removing, turning or reintroducing the plate as required by a single leading pre-bending machine used for this range of plate thicknesses. unlike three roll models that require pre-bending on both ends, the mca only requires that leading edge is pre-bent.