Which material performs better, nylon or polyurethane casters?

We often see the two materials, nylon and polyurethane, in various products, especially in the field of casters. But what exactly is the difference between them, which one has better performance? Let’s explore together.
First of all, we need to understand the fundamental difference between these two materials. Simply put, polyurethane is an elastic material that is softer, so it is less noisy and has more friction. This means that polyurethane casters are quieter in operation, but may not be as wear-resistant as nylon casters.

And nylon is a harder material, which has very good abrasion resistance. So if you need a caster with high load capacity and wear resistance, nylon casters may be more suitable for you!

So why are these two materials so different? Actually, it all stems from their own chemical structure and properties. Polyurethane is made by polymerizing isocyanate with hydroxyl compounds, and it has good oil resistance, toughness, abrasion resistance, aging resistance and adhesion. Nylon, on the other hand, has high heat resistance, fatigue resistance and abrasion resistance, as well as excellent mechanical strength and dimensional stability.