An ATM purchase can be thought of like most technology purchases - whereas it becomes technically obsolete long before it becomes mechanically obsolete. For many institutions, running an ATM for 10-15 years is common, and they may have a rolling upgrade of say 10% - 20% of all ATM's each year.
Certain compliance and enhanced technology like envelope free deposits can drive some of the upgrades a bit faster, but as institutions continue to look for ways to run more efficient, it is often the ATM which continues to operate that is often bypassed for other investments. Institutions should already have a plan in place today on how they are addressing this both in the short term and in the long term.
Source: Computerworld UK