1,Diameter: 60-219mm 2,Idler Length:160mm-3500mm 3,Bearing Size:6204,6205,6305,6206, ... 6306,6307,6308 4,Guranteen Time:30000h Name: conveyor roller idler Feature: 1.Roller idlers Dia 60mm-219mm, length 150-3500mm ... ,000 hoursApplication:Coal industry, power industry, cement industry, harbor, metallurgy. general idler