Application: Thin rubber brush holder boss component for Hitachi ATM cash processing module. Holds and positions the cleaning brush assembly inside note transport path, keeps stable contact to clean dust and paper debris on rollers. Solves brush displacement, poor cleaning effect, abnormal noise and banknote skew caused by rubber aging, deformation and cracking. Accurate dimension matching original installation position, convenient for on‑site disassembly and replacement. Regular consumable mechanical spare part for atm machine financial equipment cash module maintenance.