Product Description
SU 528-XL-A load wheel assembly features a 3.25 inch diameter polyurethane tread on a steel hub with 6.38 inch tread width and 2.04 inch bearing bore, designed as a direct fit replacement for electric pallet truck applications requiring precision load wheel assemblies.
Specifications: 3.250 inch diameter x 6.375 inch width (3.250" x 6.375" | 3.25 x 6.38 wheel | 3-1/4 x 6-3/8 | 82.55mm x 161.92mm)
Specifications
Material
| Tread Material | High-durability polyurethane compound |
| Hub Material | Machined steel core |
Part Numbers
| OEM Part Number | SU 528-XL-A |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 6.375 |
| Bore Depth | 0.812 |
| Hub Width | 6.375 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: Is SU 528-XL-A compatible with Yale or Hyster electric pallet jacks?
A: SU 528-XL-A fits electric pallet trucks requiring a 3.25 inch diameter load wheel with 6.375 inch tread width and 2.04 inch bearing bore. Cross-reference your equipment OEM documentation to confirm the 82.55mm x 161.92mm dimension matches. Verify that your truck uses a steel-hub assembly before ordering.
Q: What is the difference between SU 528-XL-A and SU 529-XL-A?
A: The primary difference is tread width. SU 528-XL-A is 6.375 inches wide, while SU 529-XL-A is 6 inches wide. Both have 3.25 inch outside diameter and 1.938 inch inside diameter. Do not substitute these parts; verify your truck specification before ordering.
Q: Can I replace SU 528-XL-A myself or does it require a technician?
A: Replacement requires removing the wheel hub assembly and pressing the old wheel off the steel hub, then pressing the new polyurethane tread onto the hub. Most shops use a hydraulic press for this operation. If your truck is under warranty, contact the manufacturer before attempting removal. Hand tools are insufficient for safe installation.
Q: How long does SU 528-XL-A last under typical warehouse use?
A: Cushothane XL polyurethane tread typically lasts 12 to 24 months depending on floor type, load frequency, and surface conditions. Rough concrete shortens lifespan; smooth epoxy floors extend it. Inspect for flat spots or hardening every 6 months. Replace when tread becomes uneven or steering becomes difficult.
Q: What tools and bearings do I need to install SU 528-XL-A?
A: Installation requires a hydraulic press (25-ton minimum), the OEM bearing kit for the 2.0467 inch bore, and a new bearing seal. The bore depth is 0.812 inches per side. Check your truck manual for the correct bearing part number and seal type, as these vary by manufacturer. Press wheels at 5 to 10 tons of force per side.