Rotor systems are used in many different engineering fields. To prevent the failure of the parts and, ultimately, the system, it is vital to monitor the operation of the various rotating system components given the high-speed requirements of today’s machinery. Some of the typical issues with rotating systems are bearing problems. One method for periodically assessing the performance of the individual components of a machine is condition monitoring. Monitoring vibration, noise, temperature, wear debris, oil contamination, and other factors can help determine how well the system is working. Vibration signatures are the modifications to these parameters. The signatures reveal differences in machine’s performances. The probable reasons of machine failure can be predicted by examining the vibration signatures created in machine parts. One of the crucial components of any rotating machinery is bearing, and vibrations created due to various defects are transmitted to the foundation through bearing. The failure of bearing could result in collapse of the entire system, so it is crucial to investigate the defect in bearings. Early mechanical failure is indicated by the vibration signal. In the current work, frequency spectrum for bearing defects was experimentally investigated. It gives a clear understanding of how the frequency spectrum changes when the ball bearing’s inner race has defects. In this investigation, wire cut EDM was used to induce defects in the inner race of the ball bearing. In the current work, an experimental investigation into this topic was conducted. A piezoelectric, tri-axial accelerometer was employed in an experimental setting in conjunction with the photon+ (Brüel and Kjaer) ultra-portable dynamic signal analyzer for data collection to acquire frequency spectra for healthy and faulty bearing. Rise in amplitude at the ball pass frequency inner race (fbpfi) will be observed if the bearing has a fault at the inner race. At operating frequencies of 10, 15, and 20 Hz, the frequency spectrum for bearing with and without has been acquired.