CH1700,CH2100X,CH2200,Powertrak750. The Powerscreen® Chieftain range of mobile incline screens are designed for the processing of aggregates and sand. Within the range there is a model to suit every application, from the small and agile Chieftain 400 through to the flagship Chieftain 2100X model. All Chieftain machines are designed to be easily transported, set-up, operated and maintained.