The performance of bearings has been analysed in this insightful book. Bearings (both plain and rolling material) are significant supporting materials for locating rotating components and confining their motion in the desired direction. In order to ensure their operational reliability and desired life, bearings need to be properly chosen for an application, primarily due to the constantly increasing operational speeds. This requires a careful performance analysis of various types of bearings while considering aspects like thermal stability, lubrication, contaminants in lubricants and controlling mechanism, etc. This book consists of several aspects contributing towards the performance analysis of plain bearings (both journal and thrust), rolling element bearings and magnetic bearings.