Product Description
Poly Load Wheel, 97-A
Specifications: 3.250 inch diameter x 6.000 inch width (3.250" x 6.000" | 3.25 x 6 wheel | 3-1/4 x 6 | 82.55mm x 152.40mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 6 |
| Bore Depth | 0.812 |
| Hub Width | 6 |
| Bore Outside Diameter | 2.0467 |
| Tread Profile |
Frequently Asked Questions
Q: What is the hardness rating of SU S529-XL and why does it matter?
A: SU S529-XL is 97-A Shore hardness, which is firmer than the standard 95-A (SU S529). Higher hardness means longer tire life (less wear), better load retention, and reduced deflection under heavy sustained loads. The trade-off is reduced grip on slippery surfaces and a slightly harder ride. Use 97-A for high-speed operations and smooth, clean warehouse floors. Use 95-A for rough or wet surfaces.
Q: Is SU S529-XL compatible with trucks designed for SU S529 wheels?
A: Yes, the bore, diameter, and width are identical (3.25 inch x 6 inch). SU S529-XL will bolt directly onto any truck that used SU S529. However, do not mix 95-A and 97-A wheels on the same truck, as this creates handling imbalances and uneven tire wear. Replace all four load wheels together with the same hardness rating.
Q: How long should SU S529-XL wheels last compared to 95-A?
A: SU S529-XL (97-A) typically lasts 30 to 50 percent longer than SU S529 (95-A) under equivalent duty cycles on smooth floors. Lifespan depends on load, floor surface, operating speed, and maintenance. On rough or wet surfaces, the durability advantage diminishes. Monitor wheel diameter annually; replace when diameter falls below 3.0 inches.
Q: Can I measure the hardness of a used SU S529-XL wheel to verify it is genuine 97-A?
A: Yes, use a Shore A durometer (hardness gauge). A genuine 97-A wheel should measure 95 to 99 on the Shore A scale. If you do not have a durometer, squeeze the tire with your thumb; 97-A is noticeably firmer than 95-A. Compare side-by-side with a known 95-A wheel if possible. If hardness is questionable, contact the supplier with the SKU SU S529-XL for verification.
Q: What is the maximum load per wheel for SU S529-XL?
A: Maximum load depends on your truck rated capacity and carriage design, not the wheel alone. SU S529-XL is rated for the same truck capacity as SU S529. Do not exceed the truck manufacturer labeled load rating. Typical trucks with 3.25-inch dual load wheels handle 4000 to 6000 pounds per axle. Always refer to your truck nameplate for the exact maximum load.