Avancées en ingénierie automobile
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Fault diagnosis of self-align roller bearing at various speed using frequency domain

Hyun-Chul Bae1 and Jin-Woo Park

To minimize the faults of the self-align roller bearing in the different types of machines in the workshops or industries before any kind of a huge failure, it’s mandatory to monitor them. The main objective of this experimentation is to detect the defective bearing and differentiate with the healthy bearing. The two processing techniques which is used are frequency domain and time domain which helps to find their response of defective one and the healthy one and differentiation between them. The perimeter which is followed are Velocity, Mach, and Displacement Spectrum. The self-align roller bearing used is with the number 1205. The speed of rotation input parameters are changed. 500, 750, 1000. The comparison between the fresh and the used one using the time domain and the frequency audit of the vibration signals represent that the healthy bearing gives more stable and stationary signals as compared to unhealthy bearing.
Most of the industries in this competitive world depend upon the roller bearing to make effortless work done in different parts of the mechanism in the machines. The machine efficiency is based on the condition of the bearings. The main object of the bearing is to reduce the friction between the mating parts as much as possible to give higher efficiency. So the maintenance of the bearing is necessary. The parameters of maintenance are surveillance temperature, lubrication, vibration, wear, noise etc. The maximum occurring factor in unhealthy operation of machine is vibrating the rolling element that is cylindrical roller.
Furthermore different types of cracks, wear and spalls of the inner and the outer race of the roller bearing which causes vibration in the machine. It is mandatory to check and cross verify the functioning of the bearing which is used in the machine without any breakout. To measure the vibration in this study, depends on the machine work without affecting it. The piezoelectric accelerometer is a device which is used to employ the piezoelectric effect of certain materials to measure dynamic