Proper rolling bearing lubricants and lubrication procedures are critical for delivering adequate bearing performance in critical situations. Main roles of Zirconium di oxide (ZrO2) nanoparticles in engine oil as lubricant additive for rolling bearing are reduction of wear and friction, extension of fatigue life, removal of frictional heat, and protection from corrosion. The present work investigates the tribological properties of SAE20W40MGO and ZrO2 nano particles in SAE20W40 MGO oil for 0.4% concentration between steel/steel contact. In order to study wear under variable speed conditions, four-ball wear tests were carried out with chrome-plated steel balls (Grade E-52100), which were designed using 2 levels of factorial design of experiments (DOE). Nano-lubricant deterioration with and without ZrO2 were determined using empirical equations to project wear with reference to speed and ZrO2 concentration. Results presented that anti-wear properties of the SAE oil samples enhanced with ZrO2 irrespective of speed range.

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With recent advancements and advent of industry 4.0 model, industries are transforming the traditional methods to intelligent and digitization techniques, which create high demand for scientific and effective health management of mechanical equipment. The aim of this paper is to do a comparative study of different fault diagnosis techniques in rolling elements bearing. It will also help to better understand the process and approaches of all types of fault detection techniques, which will give new insights for the research leading to further improvement in the performance of rolling elements bearing. Early and accurate identification of the fault is of paramount importance, as it can help to further prevent the wear and tear of the machine and to preserve the rolling machine work in a healthy atmospheric state.