<![CDATA[Vibration arising from cyclic forces between coupled components can lead to performance degradation and mechanical damage. This study aims to analyze the effects of belt dimensions and installation configurations on the vibration characteristics of a belt-driven centrifugal pump for condition-monitoring applications. Vibration data were collected using an accelerometer integrated with an Arduino-based IoT monitoring system. Experiments were conducted using belt thicknesses of 5.7 and 6.5 mm, widths of 125 and 150 mm, and a fixed belt spacing of 40 mm. Three belt installation configurations, namely Outside–Outside, Outside–Inside, and Inside–Inside, were evaluated. Vibration signals were processed using the Fast Fourier Transform (FFT) to identify dominant frequency components and evaluated in accordance with ISO 10816-3. The results showed that the Outside–Inside configuration produced the lowest vibration level, with a velocity of 0.39 mm/s, corresponding to the “Good” classification. This performance was attributed to more balanced load distribution and smoother force transmission, which reduced dynamic excitation and improved mechanical stability. These findings highlight the importance of belt configuration in improving pump stability and provide useful insights for future condition monitoring and predictive maintenance studies.]]>
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