PU (Polyurethane) wheels with aluminum cores are a specialized type of heavy-duty wheel that combines the strength of aluminum with the superior performance of polyurethane

• Dual Material Construction : These wheels feature a strong aluminum core (or “axle”) and a tough polyurethane (PU) outer rim. The aluminum provides structural integrity and support, while the PU offers a durable, abrasion-resistant rolling surface
• High Hardness & Strength : Polyurethane has high tensile strength and can be formulated to achieve a wide range of hardness (from Shore A10 to D80), allowing it to withstand heavy loads and impacts without permanent deformation2.
• Excellent Wear Resistance : PU is extremely durable and highly resistant to abrasion, outperforming traditional rubber materials by three to five times or more2.
• Superior Shock Absorption & Low Noise : The inherent elasticity of PU effectively absorbs shocks and vibrations during movement, reducing noise levels compared to rubber casters and providing a smoother ride23.
• Corrosion Resistance : Aluminum cores are often treated for corrosion resistance, and PU material resists many chemicals, oils, and solvents, making it suitable for use in harsh environments12.
• Lightweight yet Robust : Compared to all-metal wheels, PU-on-aluminum wheels are significantly lighter, which simplifies handling and transportation, while still being capable of supporting massive weights2.

The load capacity of PU wheels with aluminum cores varies significantly based on their size, design (e.g., swivel vs. rigid), bearing type, and specific manufacturer specifications.

As a general guide, here are some common load capacity ranges for different sizes (diameters):

• Smaller Sizes (e.g., 2-inch / 50mm) :
  • Max load capacity: Up to 110 lbs (50 kg) per caster.
• Medium to Large Sizes (e.g., 4-inch to 12-inch) :
  • Load capacity: Ranges from 1,000 lbs (450 kg) to 6,000 lbs (2,700 kg) per caster35.
• Extra-Heavy Duty Models :
  • Some specialized 12-inch single-row casters can have a load capacity of up to 3tons (6,600 lbs) per wheel5.

For precise load values, it is essential to refer to the technical specifications provided by the specific manufacturer for the exact wheel model and size required.

• Heavy Machinery : Used for the mobility of large pieces of equipment such as presses, generators, and other industrial machines.
• Logistics & Material Handling : Ideal for use in pallet trucks, stackers, hand trucks, and heavy-duty carts for moving pallets and large cargo in warehouses, ports, and distribution centers24.
• Mining & Construction : The high impact and abrasion resistance make them suitable for the rugged environments of mines and construction sites12.
• Factory & Workshop Equipment : Applied to production lines, conveyor systems, and various types of workshop carts and tool trolleys2.
• Commercial Storage Systems : Used in heavy-duty shelving and storage racks that require both stability and mobility3.