Product Description
SU S674-XL-A Load Wheel Assembly—Cushothane XL polyurethane tread bonded to precision steel core, engineered for heavy-duty electric lift truck service. Tread width: 3.625 inches; nominal wheel diameter: 6 inches; smooth profile; compatible with Superior S674-XL, L500674ASSY, and equivalent fitments. Direct-bolt, high cycle and high load polymer wheel with proprietary XL3 bonding technology for maximum durability.
Specifications: 6.000 inch diameter x 3.625 inch width (6.000" x 3.625" | 6 x 3.63 wheel | 6 x 3-5/8 | 152.40mm x 92.07mm)
Specifications
Material
| Tread Material | Polyurethane elastomer |
| Core Material | Machined steel core |
Part Numbers
| Manufacturer Part Number | SU S674-XL-A |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 6 |
| Inside Diameter | 2.238 |
| Width Side to Side | 3.625 |
| Bore Depth | 0.669 |
| Bore Outside Diameter | 2.4384 |
Frequently Asked Questions
Q: What is Cushothane XL and why is it used in the SU S674-XL-A?
A: Cushothane XL is a premium polyurethane elastomer engineered for heavy-duty, high-cycle applications. It resists abrasion, cutting, and ozone degradation better than standard polyurethane. Superior uses proprietary XL3 bonding technology to bond the XL compound to the precision steel core, ensuring maximum durability and load cycle life.
Q: What are the exact dimensions of the SU S674-XL-A?
A: Nominal outside diameter: 6.000 inches (152.40 mm); tread width: 3.625 inches (92.07 mm); inside diameter: 2.238 inches; bore depth: 0.669 inches; bore outside diameter: 2.4384 inches. Tread profile: smooth (versus radius). Core material: precision steel.
Q: What is the difference between the SU S674-EZ-A and SU S674-XL-A?
A: The SU S674-EZ-A uses standard Cushothane polyurethane with a 3/8 radius tread profile. The SU S674-XL-A uses premium Cushothane XL with a smooth tread profile and XL3 bonding technology. The XL-A has longer tread life and better resistance to cuts, abrasion, and chemical exposure. Both fit the same 6 inch by 3.625 inch wheel cavity.
Q: When should I choose the SU S674-XL-A over the standard EZ-A assembly?
A: Choose the SU S674-XL-A for high-load stacking operations, frequent turning and steering, rough concrete floors, high-speed trucks, or environments with oil, solvents, or ozone exposure. The XL compound lasts 18 to 24 months compared to 12 to 18 months for standard polyurethane.
Q: Is the smooth tread profile of the SU S674-XL-A suitable for all floor types?
A: The smooth profile is optimized for smooth to moderately rough warehouse floors. It provides excellent load distribution and steering response indoors. Do not use on wet, oily, or highly polished floors where slip risk is high. Test fit and operate briefly before full deployment.
Q: How do I confirm the SU S674-XL-A is compatible with my lift truck?
A: Verify your truck requires a 6 inch by 3.625 inch load wheel with a 2.4384 inch bore outside diameter. Cross-reference your current wheel part number against Superior equivalents. Contact Superior or your parts supplier with your truck model, serial number, and current wheel part number for definitive fitment confirmation.