What are the advantages and disadvantages of PP/PU casters?

Analysis of the Advantages and Disadvantages of PP/PU Casters

Advantages
Excellent Wear Resistance: The PP (polypropylene) base provides high-strength support, while the PU (polyurethane) surface is moderately hard and wear-resistant, extending the caster's lifespan and making it suitable for frequent movement.

Quiet Performance: The PU material has a certain degree of elasticity, resulting in low friction with the floor during rolling, making it suitable for environments requiring high levels of quietness, such as medical and office environments.

Adaptable Flooring: It can cushion vibrations and protect floors (such as wood floors and tiles) from scratches, while also ensuring smooth rolling on rough surfaces.

Stable Load-Bearing Capacity: The PP/PU composite structure combines both rigidity and toughness, allowing a single caster to stably carry heavy loads (such as this product, up to 160 kg).

Good Corrosion Resistance: It is resistant to common chemicals and oils, making it suitable for a variety of environments, including industrial and logistics.

Disadvantages
Limited High-Temperature Resistance: Prolonged exposure to high temperatures (above 60-80°C) may cause softening and deformation, affecting performance. Hardens easily at low temperatures: PU material loses its elasticity at low temperatures, potentially increasing rolling resistance and reducing its quietness.

Higher cost than pure PP casters: Due to the addition of PU material, the cost is slightly higher than that of pure PP casters. The cost-effectiveness should be evaluated based on the specific application scenario.