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 of the SU 674 wheel?
A: The SU 674 is 6.000 inches (152.40mm) outside diameter by 3.625 inches (92.07mm) width with a 2.238 inch (56.85mm) bore. Material is Cushothane XL, a premium polyurethane compound offering superior load capacity and durability compared to standard rubber. Tread profile is 3/8 inch radius, providing a neutral grip for warehouse floors.
Q: Is the SU 674 wheel compatible with SU 673-series assemblies?
A: No. The SU 674 has a different bore geometry and is not interchangeable with the SU 673-XL wheel. The SU 674 is part of a separate product family designed for specific truck models (typically older or regional variants). Install only the wheel type specified in your truck manual to avoid bearing damage.
Q: What is the load capacity and maximum operating speed of the SU 674?
A: The SU 674 supports up to 5,500 lbs per wheel under normal warehouse conditions. Maximum operating speed is 15 miles per hour (no speed rating applies to industrial lift wheels; speed is governed by the truck motor). Do not operate above rated load or speed; doing so shortens wheel life and risks failure.
Q: Can the SU 674 be used outdoors or on rough surfaces?
A: Not recommended for extended outdoor use. The Cushothane XL material degrades under UV exposure, reducing grip and durability within 6 to 12 months. Use on smooth indoor concrete or polished floors only. Rough or uneven surfaces cause accelerated wear (flat spots, chunking) and reduce service life to under 12 months.
Q: How does Cushothane XL compare to standard polyurethane?
A: Cushothane XL is a high-durometer formulation (typically 92 Shore A) offering 25-40 percent longer service life than standard polyurethane (85 Shore A). It provides better load distribution, resists puncture and tearing, and maintains grip across a wider temperature range (minus 10 to plus 140 degrees Fahrenheit).
Q: What maintenance or inspection schedule is required for the SU 674?
A: Inspect every 250 operating hours or monthly. Look for flat spots, tread loss, cracking, or embedded debris. Wipe wheels clean weekly to remove oil, hydraulic fluid, and dirt (these degrade Cushothane over time). Replace when tread depth falls below 3/16 inch or visible damage appears. Typical service life is 2 to 4 years under normal conditions.