Any elevator system, similar to other building equipment, comes to the end of its service life even if an appropriate maintenance is done. Generally, the service life can be estimated at between 20 to 25 years. Of course, service life isn't the only consideration. There are many other reasons to consider as follow:
The following diagram can describe a state of the normal mechanism breakdown. Pass through Primary Stage, Fortuitous Stage (Stable Stage) to Attrition Stage. If an elevator gets into the Attrition Stage, the frequency of breakdown will also increase.
