Product Description
4 X 2.875 Poly Load Wheel
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
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 4 |
| Width Side to Side | 2.875 |
| Bore Depth | 0.594 |
| Hub Width | 2.875 |
| Bore Outside Diameter | 2.0466 |
Frequently Asked Questions
Q: What are the exact dimensions of the SU S443-XL wheel?
A: The SU S443-XL is 4.000 inch diameter by 2.875 inch width (also expressed as 101.60mm x 73.02mm in metric). The bore is 2.0466 inch outside diameter with 0.594 inch bore depth. Hub width matches the wheel width at 2.875 inches.
Q: Will the SU S443-XL work on my electric lift truck that originally had a steel wheel?
A: Yes, the SU S443-XL polyurethane wheel replaces standard steel wheels of matching bore size and hub diameter. Always verify that the bearing bore and width match your truck spindle before installation. The Cushothane XL material reduces floor damage and noise compared to steel.
Q: What is the load rating and durometer of the SU S443-XL?
A: The SU S443-XL uses Cushothane XL polyurethane (97A durometer) for the tread. Consult your truck manual or contact technical support for the exact load capacity per wheel, as it depends on axle configuration and truck weight distribution.
Q: What does the 3/8 Radius tread profile mean for the SU S443-XL?
A: The 3/8 Radius tread profile is a curved surface design that improves load distribution and floor contact. This profile reduces edge wear and provides smoother steering compared to a flat tread, extending wheel life in warehouse environments.
Q: How do I know when to replace the SU S443-XL wheel?
A: Replace the wheel when tread depth is less than 3/8 inch, when the polyurethane shows chunks missing, when the wheel develops a flat spot or visible crack, or when steering becomes notchy or difficult. Worn wheels reduce load stability and increase stopping distance.
Q: Can I mix the SU S443-XL with different wheel sizes on the same truck?
A: No. Mixing wheel diameters or widths causes uneven load distribution, poor steering, and accelerated wear. Always replace wheels as a matching set or axle pair to maintain truck stability and handling.