The bag opener is a machine driven by 4 strong support steel drums Vulkollan coated with adjustable position and protected, the rollers are in contact with support rings in high quality steel welded on the out surface of the cylinder. Motor made up by gearmotors directly fitted on roller shafts with speed variation. Horizontal contrast safety rollers made up by heavy duty Vulkollan coated wheels fully adjustable. The steel cylinder has replaceable blades inside for material movement. The cylinder is protected by casings on each side. The machine is fully customizable on customer’s demand.