poly

In-stock polyurethane wheels ship within 24 hours from our Tucker, GA, warehouse. Our Certified Caster Specialists can also help you confirm bore size, bearing size, hub width, and load requirements before ordering.

Why Choose Polyurethane Wheels?

• High load capacity: Options range from 1,000 lbs to 3,400 lbs per wheel.
• Floor protection: Polyurethane provides a softer contact surface than metal wheels while still supporting demanding loads.
• Resistance to common shop exposure: Atlanta Caster's published product information identifies resistance to oil, grease, water, and most solvents across these wheel constructions.
• Four core choices: Select poly, cast iron, aluminum, or one-piece polyurethane based on weight, capacity, price, and operating conditions.
• Resistance to flat spotting: Polyurethane can hold its shape better than some softer rubber wheels when equipment remains stationary for long periods.
• Fast shipping: In-stock sizes ship within 24 hours and include a 30-day return policy.

Shop Polyurethane Wheels by Construction

Solid Polyurethane Wheels

Solid polyurethane wheels are molded from polyurethane throughout rather than using a separate metal or polypropylene core. Their one-piece construction suits replacement applications where you want polyurethane's floor-friendly tread without a second core material.

The 8" x 2" Solid Polyurethane Wheel carries 1,800 lbs and uses a 1/2" bearing. It is a strong fit for carts that need higher capacity from a one-piece polyurethane wheel.

Browse related 8" caster wheel options if you are comparing wheel diameters across an existing cart or equipment setup.

Polyurethane on Poly Wheels

Polyurethane on Poly wheels combines a polyurethane tread with a polypropylene core. This construction keeps wheel weight down while retaining the floor protection and quieter rolling associated with polyurethane.

The 8" x 2" Polyurethane on Poly Wheel carries 1,000 lbs and uses a 1/2" bearing.

This family can suit:

• Food-service carts
• Hotel housekeeping carts
• Commercial utility carts
• Equipment where lower wheel weight matters
• Replacement applications where cost is an important factor

If weight and price matter more than maximum load capacity, a poly-core wheel is often the first construction to compare.

Polyurethane on Cast Iron Wheels

Polyurethane on Cast Iron combines a polyurethane tread with a cast iron core. This family carries the highest published capacities in Atlanta Caster's polyurethane wheel collection.

The 12" x 3" Polyurethane on Cast Iron Wheel is rated at 3,400 lbs with a 3/4" bearing, making it the highest-capacity verified wheel in this group.

The 8" x 2" Polyurethane on Cast Iron Wheel carries 1,500 lbs and uses a 1/2" bearing.

Atlanta Caster's published product information lists this construction as:

• Non-marking
• Non-staining
• Non-conductive
• Rated from -40°F to 180°F
• Suitable for indoor and outdoor use

The cast iron core can rust in wet or corrosive environments, so operating conditions still matter when choosing this construction.

For loads above 2,000 lbs, you can also review Atlanta Caster's heavy-duty capacity guide.

Polyurethane on Aluminum Wheels

Polyurethane on Aluminum pairs a polyurethane tread with an aluminum core. It offers a metal-core construction with less weight than cast iron and without the rust concerns associated with cast iron.

The 8" x 2" Polyurethane on Aluminum Wheel carries 1,500 lbs and uses a 1/2" bearing.

Atlanta Caster specifically lists this wheel as non-marking. It can be a practical choice when you want metal-core stability without opting for a heavier cast-iron wheel.

Are Poly Wheels and Polyurethane Wheels the Same Thing?

Yes. In caster terminology, "poly wheels" is simply a shortened way of saying "polyurethane wheels."

Atlanta Caster's catalog groups Solid Polyurethane, Polyurethane on Poly, Polyurethane on Cast Iron, and Polyurethane on Aluminum under the same "Poly" material category because all four use polyurethane for the wheel or tread.

The important difference is the core construction:

"Solid polyurethane" should therefore refer only to the one-piece construction, not the whole polyurethane wheel category.

Which Polyurethane Wheel Core Should You Choose?

Start with load capacity, then consider weight, moisture exposure, and price.

Choose Polyurethane on Poly when you need a lighter, lower-cost wheel for commercial carts and equipment.

Choose Polyurethane on Cast Iron when load capacity is the main concern. This construction reaches 3,400 lbs per wheel in the current range, but the metal core can rust when regularly exposed to moisture or corrosive conditions.

Choose Polyurethane on Aluminum when you want a metal core without the weight of cast iron or the risk of rust.

Choose Solid Polyurethane when you prefer a wheel molded entirely from polyurethane without a separate core material.

Most options in this range fall within Atlanta Caster's medium-duty capacity category.

Polyurethane vs. Rubber vs. Nylon Wheels: What's the Difference?

Polyurethane generally supports more weight than similarly sized rubber wheels while still providing better floor protection than hard metal wheels.

Rubber wheels usually provide more shock absorption on rough or uneven floors. That can make rubber more comfortable where vibration is a greater concern than load capacity.

Nylon wheels are harder and roll with low resistance, but they do not provide the same cushioning against finished floors.

Polyolefin wheels are another hard-wheel option worth considering where low wheel weight and chemical exposure matter.

For a broader comparison of materials, use Atlanta Caster's caster wheel material guide.

Do You Need a Replacement Wheel or a Full Caster?

This page sells wheel-only components.

Choose a replacement wheel when the existing caster fork, mounting plate, axle, and swivel mechanism are still in working condition.

Before ordering, confirm:

• Wheel diameter
• Tread width
• Bore size
• Bearing size
• Hub width
• Load capacity

A matching wheel diameter alone does not guarantee the replacement will fit your existing caster.

If the fork, swivel section, or mounting hardware also needs replacement, shop a complete polyurethane caster assembly instead.

What Are Polyurethane Replacement Wheels Used For?

Polyurethane wheel replacements suit many commercial and industrial applications.

• Existing carts and dollies: Replace a worn, cracked, or damaged wheel while keeping the original fork.
• Food service and hospitality: Polyurethane on Poly offers a lightweight option for service and housekeeping carts.
• Industrial material handling: Cast-iron-core polyurethane wheels provide greater capacity for heavier equipment.
• OEM and cart manufacturing: Wheel-only components can be specified for custom forks, axles, carts, and fixtures.
• Wet or corrosion-conscious applications: Aluminum-core options avoid the rust concern associated with cast-iron cores.

Frequently Asked Questions

1. Are poly wheels the same as polyurethane wheels?

Yes. "Poly" is common shorthand for polyurethane. Atlanta Caster groups all four polyurethane constructions under its Poly material category.

2. What's the difference between the four polyurethane wheel types?

The main difference is construction. Solid Polyurethane is molded as one piece. Polyurethane on Poly uses a polypropylene core. Polyurethane on Cast Iron uses a cast-iron core for the highest published capacity, while Polyurethane on Aluminum uses a lighter-metal core.

3. Are polyurethane wheels better than rubber wheels?

It depends on the application. Polyurethane generally supports higher loads and resists wear better, while rubber usually provides greater shock and vibration absorption on rough floors.

4. Are polyurethane wheels non-marking?

Atlanta Caster specifically lists its Polyurethane on Cast Iron and Polyurethane on Aluminum wheels as non-marking. Check the individual product listing before assuming every polyurethane wheel has the same property.

5. What load capacity do polyurethane wheels carry?

Atlanta Caster's featured polyurethane wheels range from 1,000 lbs to 3,400 lbs per wheel. Always use the listed capacity for the exact product and calculate the load per wheel rather than the total cart weight alone.

6. Do I need a wheel or a full caster?

Choose a wheel-only replacement when your existing fork, axle, and swivel assembly are still usable. If you need the complete wheel-and-fork assembly, choose a polyurethane caster instead.

7. How fast do polyurethane wheels ship?

In-stock polyurethane wheels ship within 24 hours from Atlanta Caster's Tucker, GA warehouse. Delivery is typically 7–10 days, and orders include a 30-day return policy. If you need help confirming bore, bearing, hub width, or core construction, contact our Certified Caster Specialists before ordering.