What methods can be used to increase the load-bearing capacity of a trolley wheel?

Increasing the load-bearing capacity of a trolley wheel requires comprehensive attention to material, structure, and maintenance. Specific methods are as follows:

1. Upgrading the Wheel Material
Preferably, high-strength materials are recommended. For standard polyurethane wheels (each wheel can bear approximately 100-150 kg), replacing them with high-hardness polyurethane (Shore D 85-90 or above) can increase the load-bearing capacity to 150-200 kg. For standard nylon wheels, glass-fiber-reinforced nylon (15%-30% glass fiber content) is recommended, which can achieve a load-bearing capacity of 200-250 kg and significantly improve creep resistance. For specialized applications (such as supermarket carts), a composite wheel with a "nylon hub + polyurethane tread" can be used to achieve both load-bearing and cushioning properties.

2. Optimizing the Wheel and Wheelset Structure
Widening the wheel tread to 50-60 mm and increasing the wheel wall thickness to 6-8 mm can effectively distribute pressure and reduce the risk of deformation. It's recommended that wheel hubs be made of stamped steel or cast aluminum, and equipped with load-bearing bearings (such as double-row angular contact ball bearings) to enhance overall structural strength. If the total load is high, the number of wheels can be increased and arranged appropriately. For example, replacing a four-wheel wheel with a six-wheel wheel can reduce the load per wheel by 30%.

3. Enhanced Maintenance and Proper Use
Regularly inspect the wheel for cracks, wear, and bearing condition, and relubricate promptly to prevent further damage. Avoid extreme temperatures, sharp surfaces, and oily environments to minimize material aging and corrosion. Operate strictly within the rated load and avoid impacts or sudden stops to extend wheel life.

In summary, increasing load capacity requires systematic consideration of material reinforcement, structural optimization, and proper maintenance. Selecting the appropriate solution based on the actual usage scenario will ensure wheel performance and durability.