Helical Steel Cage
Used in the return section to support the belt when the conveyed material is very adhesive, as with for example clay. They may be positioned on any part of the conveyor return section when it is relatively short. When these rollers are produced with a spiral steel cage, it is attached to the two end caps with similar characteristics to the PSV rollers series.
The spiral cage, in permanent contact with the dirty side of the belt, removes material from the belt using its natural rotary cleaning action. The rollers should be installed in a way that the spiral moves the material towards the edge of the belt. These rollers must not be employed as belt snub rollers.