Rollers are cheap. Stopped lines are not. The maintenance habits below come from the downtime logs of the lines we service — the same three findings, plant after plant.
Listen before you measure
A failing roller bearing announces itself days early as a click or hiss in an otherwise smooth run. A weekly listening walk along the line catches most failures while the spare is still on the shelf.
Watch for the shiny stripe
A polished band on a roller tube means the belt or product is slipping instead of rolling — check for a seized bearing, built-up tape residue or a low zone ahead. The stripe always appears before the flat spot does.
Change rollers in families
Rollers in the same zone share load, dirt and age. When the second one fails in a month, replace the zone — singles chasing singles is how a line spends a year failing one roller at a time.
Stock the three numbers
Every roller on your floor is described by tube diameter, length between frames and shaft type. Keep that list taped inside the parts cabinet and any brand’s catalog becomes your spares shelf.
