Heavy Duty Polyurethane Wheels Products DescriptionHeavy Duty Polyurethane Wheels is the most strongest wheel among the PU Wheels Family. Not only including all advantages of Polyurethane,Website:http://www.dc-casters.com, Heavy Duty PU Wheels but also can bear loading capacity as 3500Kgs. The Super Duty Capacity can make this kind of PU Wheels adapt to any heavy industrial use.Steel Grade: Q345Surface treatment: Plate Zinc Or SpraySteel Thickness:10mmInstallation Diagrams:160mmx160mm  130mmx130mmBearing: Integrated Bearing Or Double BearingWHEEL Materials: PUMode: Rigid, Swivel, BrakeSpecification:Wheel MaterialsWheel Dia.(Inch)Wheel Width(MM)Overall Height(MM)BearingLoading Capacity(KGS)Steel Iron CorePU Wheel6"70-100200Double Bearing850-15008"70-100246900-180010"70-100295950-200012"70-1003451000-250014"70-1004001100-300016"70-100601200-3500