What typically causes a pneumatic system to cycle erratically?

A pneumatic system cycles erratically primarily due to irregular air supply, insufficient pressure, or worn components. When the air supply is inconsistent, the components of the system do not receive the necessary pressure to operate smoothly. This can lead to unpredictable and erratic movements of cylinders and other actuating mechanisms as they do not have a steady source of power. Additionally, worn components can contribute to poor sealing and flow characteristics, exacerbating inconsistencies in the air delivery and further disrupting the system's operation.

Regular inspections and maintenance help to mitigate these issues by ensuring that all components are in good working condition and that the air supply is adequate, but they do not cause erratic cycling themselves. High lubrication levels would typically support smoother operation rather than cause erratic cycling, and consistent air supply is vital for proper functionality and would reduce the likelihood of erratic operation rather than contribute to it.