In the selection of casters, “wear resistance” is often regarded as an indicator, but what truly determines the lifespan of the wheel is usually “material + operating conditions”. Even for the same type of universal wheel, nylon (PA), polyurethane (PU), and rubber exhibit different wear resistance, noise levels, ground friendliness, load capacity, and environmental adaptability. Based on the original text, this article supplements with key influencing factors, comparison points, and typical scenario suggestions to facilitate your quick selection in scenarios such as factories, warehouses, hospitals, and airports.
1. What determines the wear resistance? First, let’s clarify these four influencing factors:
1). Ground material and roughness: Rough cement/asphalt will accelerate wear; smooth floors like epoxy/PVC have relatively lower wear, but are more concerned about “black marks/scratches”.
2). Load capacity and usage: Static load (parking) ≠ dynamic load (pushing). Frequent turning, spinning in place, and crossing thresholds/uneven surfaces will significantly increase wear and tear on the wheel surface.
3). Speed and temperature: When operating at high speeds, handling over long distances, or in high ambient temperatures, the heat generated on the wheel surface can affect the material’s hardness and wear stability.
4). Chemistry and Clean Environment: Oil stains, weak acid and alkali cleaners, and damp rinsing can affect the aging speed of materials and the lifespan of bearings/supports, indirectly leading to “the more you use, the more expensive the wheel becomes.”
2. Comparison of Wear Resistance and Comprehensive Characteristics of Three Materials
The following comparison is based on common industrial/commercial caster materials. Variations may arise due to different formulations, hardnesses, processes (injection molding/casting/vulcanization), wheel widths, and bearing configurations. It is recommended to refer to actual sample testing and working conditions.
| Materials | Wear resistant | Noise/Shock Absorbing | Floor Protection | Load Capacity and Rolling Resistance | Application |
| Nylon（PA） | High (high hardness, wear-resistant and stable) | The noise level is relatively high, and the shock absorption is average | Not suitable for delicate floors, prone to scratching/marking | Low rolling resistance, suitable for long distances; however, it experiences high impact when encountering uneven terrain | Warehouse handling, rough floors, outdoor/workshop passageways, insensitive to noise |
| Polyurethane(PU) | High (wear-resistant, tear-resistant, excellent overall performance) | Low noise, good shock absorption | t is relatively friendly and has fewer black marks (depending on the formula) | It has strong load-bearing capacity, requires less effort to push, and offers a balanced overall performance | Suitable for hospitals, airports, supermarkets, and factories, it requires both wear resistance and silent operation while providing ground protection |
| Rubber | Medium to high (wear resistance depends on the formula, with a bias towards elasticity) | Low noise, good shock absorption. Friendly, not easy to damage the ground | Friendly, not prone to scratching the floor, but some formulas may leave black marks | The rolling resistance is relatively higher, making long-distance pushing more strenuous; the oil and chemical resistance need to be confirmed | In situations where high shock absorption/noise reduction is required, the ground needs protection, and there are many gaps and small obstacles to navigate |
Post time: Mar-05-2026
