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SUJR Over Arm Separator Discs Guide Discs SUJR Overarm Separator Discs (Guide Discs) SUJR overarm separator discs, also known as guide discs, are precision-engineered components designed for use in metal coil slitting lines. Installed on the shaft of slitting machines, these discs play a critical role in separating and guiding narrow slit strips, ensuring smooth rewinding and consistent coil quality. Manufactured from high-grade SUJR or equivalent bearing steel (ASTM52100),