Proposed methodology for determining the optimal preload of rolling bearings

Rolling bearings are key components in various mechanical systems, where their proper preload ensures optimal operational performance, enhances bearing life, and minimises wear. Inadequate preload adjustment or improper clearance settings in bearings can lead to increased wear and premature failure, adversely affecting the overall reliability and efficiency of machinery. This study aims to develop a methodology for determining the optimal preload of rolling bearings, tailored to the load conditions and duty cycles of a selected structural node - in this case, the gearbox of a railway vehicle's drive unit. The proposed methodology considers the effects of preload on contact pressure, fatigue life, and the dynamic behaviour of bearings, drawing upon insights from previous studies and experimental findings. By implementing this methodology, the reliability and efficiency of systems in various applications, including high-speed machinery, automotive components, and wind turbines, can be significantly improved.