... roller 1.Standared:DIN,CEMA,AS,JIS 2.Size:89mm*6204 3.Material:Carbon steel 4.Used:Coal mine,power ... than 5 mm219150-3500308 310more than 5 mmconveyor roller:1.Roller idlers Dia 63.5mm-219mm, length 150-3500mm ... , which are used in the steel industry,harbor, coal industry, power ... idler etc.Package Belt conveyor carrying roller use for power plant conveyor