Polyurethane Casters Products DescriptionThe difference between this kinds of heavy duty type Polyurethane Casters and the other PU Wheels is the thickness of Polyurethane. DC Casters engineer increase wheel thickness to 75mm,Website:http://www.dc-casters.com, also raise the steel sheet thickness to 12mm.  These two improvements make the max. loading capacity arrive 800KGS. For the 6 Inch. 8Inch,10 Inch and 12Inch also get the same level of improvement. Finally, 12Inch Polyurethane Casters can reach up to 2000 Tons Loading Capacity.Steel Grade: Q235 Or Q345Surface treatment: Plate Zinc and Spray PlasticsSteel Thickness:12mmInstallation Diagrams:160x160mm  130x130mmBearing: Double BearingWHEEL Materials: PUMode: Rigid, Swivel Specification:Wheel MaterialsWheel Dia.(Inch)Wheel Width(MM)Overall Height(MM)BearingLoading Capacity(KGS)PU6"50142Double Ball Bearing800PU8"501621000PU10"501862000PU12"502382000