Cleaning Return Rollers - Where used?

Time after time, conveyed material adhers to the belt surface. If the material is abrasive, it may wear out the roller shell of the normal steel return rollers; if it is viscous, it adheres to the roller itself, promoting dangerous build up of scale and causing vibration.

A large material deposit may also influence the tracking off of the belt in the return section.

Used on the return transom to support the belt when the material being conveyed, even if only a little sticky, is very viscous.

The helical spiral from of the non-abrasive rings, assembled onto the base roller shell, performs a cleaning action and reduces the tendency of material to deposit itself and stick to the surface of the dirty side of the belt.

They may be employed on any part of the return belt section in the case of short conveyors.

On long sections it is satisfactory to employ these rollers only up to the point where the material does not adhere any more to the belt surface.
These rollers hould no be employed as snub roller adjacent to the drive or return drums.