Product Description
Poly Load Wheel Assembly
Specifications: 5.000 inch diameter x 3.625 inch width (5.000" x 3.625" | 5 x 3.63 wheel | 5 x 3-5/8 | 127.00mm x 92.07mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 5 |
| Inside Diameter | 2.188 |
| Width Side to Side | 3.625 |
| Tread Profile | 3/8 Radius |
| Bore Depth | 0.67 |
| Bore Outside Diameter | 2.4384 |
Frequently Asked Questions
Q: What is the difference between SU 654 and SU 654-A load wheel assemblies?
A: Both SU 654 and SU 654-A share identical dimensions: 5.000 inch diameter by 3.625 inch width with 2.188 inch bore. The SU 654-A designation indicates OEM-equivalent quality certification and typically includes upgraded bearing preload specifications. SU 654-A is preferred for equipment under warranty as it meets OEM installation requirements. Functionally they are interchangeable, but documentation and warranty compliance favor the SU 654-A part number.
Q: Can I replace worn SU 654-A wheels one at a time or must I replace all four together?
A: Replace all four wheels simultaneously. Installing one new wheel creates a rolling diameter mismatch that causes the truck frame to tilt and bind the steering mechanism. Uneven wear accelerates failure of the remaining three wheels. Always order and install wheels in complete matched sets. If budget constraints require staged replacement, stagger wheel purchases monthly but install all four at once when you have the full set.
Q: How do I check if the bore depth and diameter on my axle match SU 654-A specifications?
A: Measure your current wheel axle with a caliper in three places: outer diameter should read 2.4384 inches, bore depth should be 0.67 inch, and the inner diameter hole should be 2.188 inches. If any measurement is off by more than 0.05 inch, your truck frame is non-standard and SU 654-A will not fit. Contact the equipment manufacturer for specification confirmation before purchasing. Forcing an oversized wheel onto a mismatched axle causes bearing damage within hours.