Product Description
SU S542-XL is a heavy-duty Polyurethane Load Wheel for electric lift trucks, featuring a 5.00 inch diameter and 2.875 inch width, XL3 bonding technology for guaranteed bond integrity, and built for highest duty cycle and cut resistance. Factory options include pre-pressed bearings, compatible with demanding pallet truck applications.
Specifications: 4.000 inch diameter x 2.875 inch width (4.000" x 2.875" | 4 x 2.88 wheel | 4 x 2-7/8 | 101.60mm x 73.02mm)
Specifications
Material
| Polyurethane Technology | XL3 bonding agent applied to steel hub |
| Hub Material | Machined steel |
Part Numbers
| Manufacturer Part Number | SU S542-XL |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 4 |
| Inside Diameter | 1.875 |
| Width Side to Side | 2.875 |
| Tread Profile | Angle |
| Bore Depth | 0.75 |
| Hub Width | 2.875 |
| Bore Outside Diameter | 2.4404 |
Frequently Asked Questions
Q: What is the XL3 bonding technology and why is it better than standard polyurethane bonding?
A: XL3 bonding is a proprietary adhesion system that bonds the Cushothane XL tread to the steel hub with higher molecular cross-linking. This prevents tread separation and delamination under high-stress cutting, abrasion, and impact loads. XL3 bonded wheels survive 2 to 3 times longer than standard bond designs in high-cycle applications.
Q: What load capacity does the SU S542-XL support and is it higher than the standard S542?
A: The SU S542-XL is rated for the same platform load capacity as the standard S542 (1500 to 2500 pounds per wheel). The difference is durability, not weight capacity. The XL3 bond and machined steel hub make it suitable for frequent turning, outdoor use, and rough floor conditions. Use it in high-duty-cycle warehouses and distribution centers.
Q: Can the SU S542-XL be used as a replacement for a standard SU S542 without any modifications?
A: Yes, the SU S542-XL is dimensionally identical to the SU S542 (4.000 inch diameter x 2.875 inch width, 1.875 inch bore). You can press it directly onto the existing axle without modifications. However, it does cost more due to the upgraded bonding and steel hub materials. Upgrade only if the standard wheel is failing prematurely.
Q: What is the difference between a cast iron core and the machined steel hub on the SU S542-XL?
A: The SU S542-XL uses a machined steel hub instead of cast iron. Steel is stronger, resists scoring better, and provides superior press-fit grip. Cast iron is more brittle and can crack if struck. For trucks that experience impacts or frequent rough handling, the steel hub design reduces bearing play development and extends axle life.
Q: How do I verify the SU S542-XL pressing depth to ensure proper installation?
A: After pressing the wheel onto the axle, measure the distance from the axle shoulder to the inner hub face. This should be the bore depth of 0.75 inches. If it is less, the wheel is not fully seated. Do not force it further if resistance is high. Inspect the bore and axle for contamination or damage and try again.
Q: What causes tread cracking on the SU S542-XL and how is it prevented?
A: Tread cracking occurs from excessive turning load, high curb impact, or rough floor surfaces. Prevention includes maintaining proper tire pressure on lift truck steering wheels, reducing turn sharpness at speed, and keeping floors free of obstacles. Rotate or replace wheels every 6 months in high-turn applications. The XL3 bonding resists cracking better than standard bonds but does not eliminate it.