Extra heavy swivel castors made with a fabricated steel castor bracket, fitted with a heavy duty polyurethane tyred cast ion whee fitted with precision ball bearings . These Extra heavy swivel castors range from 150mm-250mm and have a capacity up to 2500 Kg per caster. Our polyurethane tyred cast iron wheels are friendly to floors and offer incredible load capacity compared to many wheel materials. We use only the highest grade TDI urethane to help achieve the high loads required for our DNXH series castors are required to carry. They are strong hard wearing and priced competitively which is why our DNXH series castors are the choice for all extra heavy duty castors. The special swivel castor head design of our DNXH series extra heavy swivel castors makes them well suited for high load applications we would recommend these to boat builders , crane and gantry manufactures or lifting equipment manufactures.