to exceed the permitted carrying capacity of a machine or system

the state of a machine or person operating at maximum capacity or power; having a completely full workload

Unable to bear a heavy load, pressure, or responsibility.

the load or weight carried on top of the head

The maximum limit that can be carried or supported; often used to describe the carrying capacity of an environment for a population or the load limit of a machine.

Unable to bear the pressure or weight of a task or responsibility.