Analysis of Outer Race Bearing Damage by Calculation of Sound Signal Frequency Based on the FFT Method

  • Iradiratu Diah Prahmana Karyatanti Department of Electrical Engineering, Faculty of Engineering and Marine Science, Hang Tuah University, Surabaya, Indonesia
  • Ananda Noersena Department of Electrical Engineering, Faculty of Engineering and Marine Science, Hang Tuah University, Surabaya, Indonesia
  • Firsyaldo Rizky Purnomo Department of Electrical Engineering, Faculty of Engineering and Marine Science, Hang Tuah University, Surabaya, Indonesia
  • Rafli Setiawan Zulkifli Department of Electrical Engineering, Faculty of Engineering and Marine Science, Hang Tuah University, Surabaya, Indonesia
  • Ardik Wijayanto Department of Electronic Engineering, Electronic Engineering Polytechnic Institute of Surabaya, Surabaya, Indonesia
Keywords: bearing, sound, frequencies, FFT


This study aims to identify the outer race bearing needed to protect an induction motor from severe damage. Faults are diagnosed using a non-invasive technique through the sound signal from an induction motor. The diagnosis aims to assess the damage to the bearings on the fan or main shaft. Moreover, this study discusses the type of damage, loading variations, and the diagnostic accuracy with the damage to the outer race bearing placed on the fan or main shaft rotor. The disturbance detection approach is used to analyze the sound spectrum to identify the harmonic components near the disturbance frequency. The damage frequency characteristics are also calculated to determine the sound spectrum peak value. The results show that the detection is slightly affected by the damage severity and the incorrect placement of the bearings on the rotor shaft. The lowest detection accuracy in testing the outer race bearing damage on the fan shaft is 91.66%. However, the accuracy percentage is 100% with the outer race bearing damage on the main shaft.


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How to Cite
Iradiratu Diah Prahmana Karyatanti, Ananda Noersena, Firsyaldo Rizky Purnomo, Rafli Setiawan Zulkifli, and Ardik Wijayanto, “Analysis of Outer Race Bearing Damage by Calculation of Sound Signal Frequency Based on the FFT Method”, Int. j. eng. technol. innov., vol. 13, no. 1, pp. 28-39, Jan. 2023.