The metal slitting machine (also known as a metal rotary shear or longitudinal slitter) is an industrial device designed for the longitudinal slitting of metal coils. It is primarily used to process cold-rolled and hot-rolled carbon steel, silicon steel, tinplate, stainless steel, and surface-coated or plated metal coils. Based on their level of automation, these machines can be categorized into basic, semi-automatic hydraulic, and fully automatic models.
This equipment achieves precise strip slitting through a specialized cutter shaft system, enabling wide metal coils to be cut into multiple narrow strips of various specifications. The main structural assembly consists of a welded base, fixed and movable upright frames (housings), and a slide assembly; a standard machine line comprises core components such as a loading trolley, uncoiler, leveler, and the slitting machine itself.
The cutter shafts are manufactured from forged steel that has undergone quenching and tempering treatment. Integrated with a worm-gear synchronous lifting system, they achieve micron-level adjustment precision; the slitting operation is executed by locking the cutting tools in place using left- and right-hand threaded nuts. Certain models utilize a servo-motor-driven gear transmission system, incorporating graduated scales and linkage mechanisms to enhance the efficiency of cutting-gap adjustment. Leveraging advanced CNC technology and precision mechanical transmission systems, these machines are capable of performing high-precision, micron-level longitudinal slitting on ultra-thin materials-such as silicon steel as thin as 0.1 mm. Some newer machine lines feature anti-vibration designs to minimize the impact of vibration on cutting accuracy, while advanced systems integrate real-time tension feedback, online slitting monitoring, and deburring/polishing capabilities.
