Analysis of Cylindrical Bearing Vibration Characteristic Due to Static Load

• Main Author: Prawira Tumbuan, Tobias
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/41645
• Institution: Institut Teknologi Bandung

The resultant of excitation vibration force will be accumulated on the bearing. The variation of static load will result different amplitude of localized bearing defect frequency. The vibration characteristic due to static load could be summarized by knowing its differences. This study is aimed to acknowledge the cylindrical bearing vibration characteristic due to static load. It will be focused on overall vibration level (OVL), 1XRPM and its harmonic, and the amplitude of localized bearing defect frequency. Power spectrum and spectral map measurement is done to accomplish this study. FRF of the structure is evaluated to verify Pande’s work. It is also interested to know the relationship between FRF and power spectrum so that another FRF test with several configuration of static load at bearing housing is completed. The result of power spectrum shows that the bearing specimen has outer race defect. The position of the defect is estimated on the vertical orientation. Amplitude of BPFO signal is modulated by 1XRPM signal, so do its harmonics. Harmonic of BPFO and 1XRPM amplitude is responding the given static load. Based on the spectral map, it is concluded that the 1XRPM signal is not come from unbalance phenomenon. Another conclusion is the value of overall RMS increases as the rotational speed runs higher. It could be happened because the increasing of the floor noise signal.