Engine Bearings are the things that let all the rotating parts go round and round.
Engine bearings depend on a film of oil to keep shaft and bearing surfaces separated. Bearings fail when the oil film breaks down or when the bearing is overloaded.
Identifying the root cause of a bearing failure is crucial in preventing the recurrence of the failure, as a simple replacement of the bearings typically will not address the factors that led up to the failure in the first place. It is important to note that in many cases the premature bearing failure is due to a combination of several of the causes. If you do not find the original cause engine bearing failure damage will repeat itself.