6 Inch Metal Casters

These range from about 900 to 5,400 lbs per caster depending on the rig. The solid metal wheel carries heavy concentrated loads well. Divide your total load across all casters and add a safety margin.

On bare concrete or steel, no. On finished or coated floors, yes, metal wheels are hard and can score or crack softer surfaces. For floor protection, choose polyurethane or rubber. Reserve metal for shop floors and industrial concrete.

Typically cast iron or forged steel, usually zinc plated for corrosion resistance. Cast iron offers excellent capacity and wear resistance, while forged or ductile steel adds impact toughness. Both carry heavy loads and tolerate heat far better than polymer wheels.

Yes. Metal wheels tolerate far higher temperatures than rubber or polyurethane, so they are common near ovens, kilns, and foundries. For sustained heat, confirm the bearing and any seals are also rated for the temperature, not just the wheel.