Product Description
Load Wheel
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
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 6 |
| Inside Diameter | 2.238 |
| Width Side to Side | 3.625 |
| Tread Profile | 3/8 Radius |
| Bore Depth | 0.669 |
| Bore Outside Diameter | 2.4384 |
Frequently Asked Questions
Q: What are the exact dimensions and material for SU 674-EZ?
A: SU 674-EZ is a 6.000 inch diameter by 3.625 inch width load wheel with Cushothane XL polyurethane tread. Inside diameter is 2.238 inches with a 3/8 radius tread profile. Bore specifications: 0.669 inch depth, 2.4384 inch bore outside diameter. Metric equivalents: 152.40mm diameter, 92.07mm width.
Q: Is SU 674-EZ compatible with SU 674-EZ-A?
A: SU 674-EZ is the wheel only, while SU 674-EZ-A is the complete assembly. Both share identical wheel dimensions (6.000 x 3.625) and material specs. The assembly version includes the hub and bearing components pre-installed. Order SU 674-EZ-A if you need a plug-and-play replacement; order SU 674-EZ if replacing just the wheel on an existing hub.
Q: What should I check if the SU 674-EZ wheel is not rotating smoothly?
A: First, inspect the bore opening (2.238 ID) for dirt, metal shavings, or debris. Clean with compressed air. Check that the hub bolt hole is not stripped or cracked at the bore depth (0.669 inch). Verify the wheel seats fully on the axle and rotates freely by hand before mounting. If tread is chunked or torn, the wheel must be replaced. Test the bearing for play after installation.
Q: How do I install the SU 674-EZ wheel?
A: Mount onto a clean, dry axle pin. Ensure the bore opening (2.238 inch ID) aligns squarely with the hub. Slide the wheel onto the axle until the bore depth shoulder (0.669 inch) seats fully. Secure with an appropriate locking pin or bolt (verify bolt size with your truck documentation). Do not over-tighten; this can crack the polyurethane. Spin the wheel by hand to confirm free rotation and no wobble.
Q: What is the load rating and operating environment for SU 674-EZ?
A: SU 674-EZ is rated for standard warehouse and industrial flooring. Cushothane XL provides durability on concrete, asphalt, and smooth warehouse floors. Maximum continuous load depends on truck class (verify with your vehicle manual). Cushothane XL resists oil, grease, and mild chemical exposure. Do not use on extremely hot surfaces (above 140 degrees F) or outdoors in direct sunlight for extended periods, as this accelerates polyurethane degradation.
Q: When should the SU 674-EZ wheel be replaced?
A: Replace when tread is worn flat, chunked, or separating from the hub. If the wheel does not roll freely or creates excessive noise, inspect the hub bore for damage. If polyurethane has separated from the steel core (bond failure), replacement is necessary. Under normal warehouse use, expect 2 to 4 years of service. High-traffic zones or outdoor use will shorten lifespan.