<![CDATA[The Wide Belt Sander is an essential machine in wood-processing industries, where the accuracy of the height detection mechanism plays a critical role in ensuring consistent sanding quality. General Background One of the key components in this mechanism is the keyboard lever one wheel, which functions as a mechanical roller-based height sensor. Specific Background Field observations revealed that the roller bearing on this lever experienced accelerated wear, resulting in reduced sensitivity and inaccuracies in height detection. Knowledge Gap Existing mechanical designs lack optimized force distribution structures to prevent continuous excessive friction caused by heavy spring pressure against wooden materials. Aims This study focuses on redesigning the mechanical lever system by modifying the bearing support structure and optimizing the force mechanism to reduce unnecessary contact pressure. Results The redesigned gravity-based weight mechanism successfully minimized frictional wear, enhanced the smoothness of lever movement, and restored the accuracy of the height-sensing system. Novelty This work establishes a modified gravity-driven force mechanism that replaces conventional spring systems to eliminate excessive bearing friction in wood-processing sanding equipment. Implications Implementing this redesigned mechanism increases component reliability, extends roller lifespan, and reduces maintenance frequency, thereby improving overall operational efficiency in industrial wood-processing environments. Key Findings Highlights Excessive spring force pressing the roller directly against wooden materials creates continuous friction that exceeds bearing design capacity. Replacing spring mechanisms with gravity-based weights successfully lowers roller pressure and restores height-sensing accuracy. The proposed mechanism redesign extends component lifespan, reduces maintenance frequency, and improves operational efficiency. Keywords Wide Belt Sander, Keyboard Lever, Roller Bearing Wear, Mechanism Redesign, Height Detection System]]>
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