How long do ABB robots last?

Can you tell me, how long can we typically expect ABB robots to function efficiently and reliably? Are there any factors that might influence their longevity, such as the type of tasks they perform, the working environment, or the level of maintenance and upkeep they receive? I'm interested in knowing if there's a general guideline or range for their lifespan, and what kind of maintenance routines or upgrades might be necessary to prolong their usefulness and performance.