Product Description
SU 621-XL load wheel by Liftsplus.com is a precision polyurethane-tread load wheel designed for electric lift truck applications, featuring dual precision bearings, a steel core, and compatibility with select electric lift truck and pallet truck models. Replaces SU 621 and SU 621-XL-A.
Specifications: 3.250 inch diameter x 4.190 inch width (3.250" x 4.190" | 3.25 x 4.19 wheel | 3-1/4 x 4.19 | 82.55mm x 106.43mm)
Specifications
Material
| Wheel Finish | Machined surface with anti-corrosion coating |
Part Numbers
| Manufacturer Part Number | SU 621-XL |
| Cross-Reference Part Numbers | Equivalent to SU 621, SU 621-XL-A |
| Supersedes/Replaces | Replaces SU 621, SU 621-XL-A |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.875 |
| Width Side to Side | 4.19 |
| Bore Depth | 1.18 |
| Hub Width | 4.19 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: Is the SU 621-XL a direct replacement for the SU 621 nylon wheel?
A: Yes. The SU 621-XL has identical bore and diameter dimensions to the SU 621 and fits the same hub without modification. The SU 621-XL is polyurethane with dual precision bearings and a steel core, offering better durability and heat resistance. It is a plug-and-play upgrade.
Q: What are the performance advantages of SU 621-XL over the standard SU 621?
A: The SU 621-XL uses polyurethane instead of nylon, providing higher durability, better grip, and resistance to temperatures up to 140 degrees Fahrenheit. The dual precision bearings reduce friction and extend wheel life. Choose SU 621-XL for high-use environments or hot floors where nylon would degrade quickly.
Q: Does the SU 621-XL have sealed bearings like the SU 621?
A: The SU 621-XL features dual precision bearings with sealed design. Like the SU 621, these bearings are pre-greased and do not require additional lubrication. The dual bearing design distributes load better and reduces side-to-side play, which improves truck stability.
Q: What is the part number equivalence for the SU 621-XL?
A: The SU 621-XL is equivalent to and replaces SU 621 and SU 621-XL-A. There are no known cross-reference part numbers from other manufacturers for this wheel. Always verify the part number on the wheel or hub before ordering to ensure correct fitment.
Q: How much longer does the SU 621-XL last compared to the SU 621?
A: In typical warehouse use, the SU 621-XL polyurethane wheel lasts 40-60 percent longer than the nylon SU 621. Exact lifespan depends on duty cycle, floor conditions, and load. The steel core and dual bearings also reduce maintenance needs. Monitor wheels monthly for wear and replace if you notice flat spots, cracks, or reduced rotation smoothness.
Q: What is the cost difference between SU 621-XL and SU 621?
A: The SU 621-XL typically costs 30-50 percent more than the SU 621. The higher cost reflects the polyurethane material, dual bearings, and steel core. For high-utilization trucks or harsh environments, the SU 621-XL provides better total cost of ownership due to longer lifespan and reduced downtime.