Assembly Damage of Turboshaft Ball Bearing

The proper operation of bearings is extremely important to safety during engine operation, as well as having potentially large economic impact. During their design, all bearings have a calculated service life. However, there is always a risk that a bearing may fail prematurely for several reasons, with one of them being the assembly process, which if done incorrectly, can significantly shorten life. The presentation describes the analysis of a premature ball bearing finding on a turboshaft engine from a single ball spall and describes some of the features that would be identified to determine mode.