A conveyor belt trackers purpose is to guide a conveyor belt back into a straight line when misalignment appears. When a belt runs straight the tracker will function as an idler.
Only a cylindrical tracker can idle. Crowned trackers try to rotate with
two speeds at the same time.
This is not possible and result is a position between sliding and abrasion
of belt and tracker.
A rubber pivot offer soft suspension of tracker shaft, enabling long
lasting life time.
PrimeTracker is the only tracker that offer all advantages.