... a idler,Confirming some parameters:Idler dia,Idler shaft dia,Idler tube thk,Idler length,Idler material.1.Stable running,good ... and noise.Structure: Detailed conveyor roller idler featureRoller idlersDia 50mm-219mm, length 190-3400mm, which are used in the steel industry, harbor, ... lifetime, stable running and good quality.Diameter: 50 to 219mmLength: 190 to 3,500mmThe specification range that we can ...