What caster material is suitable for concrete floors?

Concrete floors (regular cement, terrazzo, or slightly roughened) are hard and may be uneven. When selecting casters, prioritize wear resistance, impact resistance, and smooth rolling.

Recommended materials include:

Industrial-grade nylon (PA) wheels: High hardness, extreme wear resistance, and a strong load-bearing capacity (up to 300–1000 kg per wheel). They are oil- and moisture-resistant, making them suitable for high-load industrial applications such as heavy equipment and warehouse racking.

Ultra-high molecular weight polyethylene (UHMWPE) wheels: Low friction, effortless pushing, superior wear resistance to nylon, and impact and chemical resistance. They are suitable for medium-to-heavy equipment with frequent movement, especially in humid environments.

Polyurethane (PU) wheels: Combine wear resistance with cushioning properties, offer a certain degree of flexibility, and are low-noise. They are suitable for medium-to-light loads (50–300 kg), such as medium-sized carts and tool equipment, where quiet operation is essential.

Cast iron wheels (with coating): Extreme load capacity (over 500kg per wheel) and extremely wear-resistant, but noisy and prone to scratching. We recommend models with a thin PU or rubber coating for heavy equipment that rarely moves.

Avoid using ordinary rubber, PVC, or unreinforced plastic wheels, as these materials have poor wear resistance and are easily damaged.

Recommended combinations: Larger wheel diameters (≥75mm) allow for better handling over cracks and impurities; double-sealed ball bearings prevent dust and seizure; cold-rolled steel or stainless steel (≥3mm thick) should be used for brackets for a more stable structure.

Summary:

Nylon for heavy loads;

UHMWPE for frequent movement;

PU for quiet operation;

Cast iron (with coating) for heavy equipment.

The key is to choose high-hardness, high-wear-resistant materials, avoiding soft materials, to enhance durability and driving experience on concrete floors.