A conveyor roller (idler) is the rotating cylinder mounted in idler frames that carries the belt and its load. A single conveyor can have hundreds or thousands of rollers, so roller quality directly determines energy use and maintenance cost.
Roller components
- Tube shell: precision welded steel tube.
- Shaft: precision-machined steel shaft transferring load to the frame.
- Bearing and housing: sealed bearing in a pressed steel housing.
- Sealing: labyrinth seals that keep dust and water out.
Roller types
- Carrying rollers for the loaded side.
- Return rollers for the empty bottom side.
- Impact rollers for shock absorption at loading points.
- Rubber-lagged rollers against wear and build-up.
Why quality matters
Poor rollers seize quickly: a seized roller wears the belt, friction heat creates a fire risk, and the line stops frequently. Low run-out tubes, correct bearings and effective sealing mean long life and low operating cost.
