2.drivingrolleridler -tubematerial:carbonsteelpipe -tubediameter:57-219mm -tubewallthickness:morethan5mm -tubelength:180-3350mm -shaftdiameter:20-70mmorasdrawing -shaftexternallength:10-40mmoneachsideorasdrawing Drivingpulleys,itisanimportantpartofbeltconveyer.Itisjustbythedrivingpulleythatthemomentsuppliedbythedrivingunitscouldgettotheconveyorbelt.