Product Description
The SU S9139-EZ is a high-performance polyurethane load wheel assembly designed specifically for electric pallet jack lift trucks. This aftermarket replacement part ensures durability and efficiency in material handling operations.
Specifications: 3.250 inch diameter x 4.500 inch width (3.250" x 4.500" | 3.25 x 4.5 wheel | 3-1/4 x 4-1/2 | 82.55mm x 114.30mm)
• Engineered with a robust composite hub for enhanced strength
• Features an abrasion-resistant tread for long-lasting performance
• Ideal for continuous-duty material handling applications
This load wheel assembly is compatible with various electric pallet jack models, providing a reliable solution for your material handling needs.
Specifications
Material & Construction
| Wheel Material | Polyurethane tread over composite hub |
| Finish | Natural polyurethane tread, no coating |
Part Numbers
| Manufacturer Part Number | SU S9139-EZ |
| Assembly Part Number | SU 9139-EZ-A |
Frequently Asked Questions
Q: What does the EZ designation mean on the SU S9139-EZ wheel?
A: EZ indicates a high-traction polyurethane compound specifically engineered for material handling equipment in general applications, wet floors, and cold storage environments. The EZ compound provides superior grip on slippery surfaces without modification to wheel mounting. EZ does not refer to installation ease.
Q: Is the SU S9139-EZ wheel suitable for cold storage use?
A: Yes. The EZ polyurethane formulation maintains traction and flexibility in cold storage temperatures down to -10 degrees Fahrenheit, preventing brittleness and loss of grip. Standard polyurethane wheels may harden and become slippery in freezer environments. If your truck operates in cold storage, the SU S9139-EZ is the appropriate choice.
Q: What are the dimensions of the SU S9139-EZ load wheel?
A: The SU S9139-EZ measures 3.250 inch outside diameter by 4.500 inch tread width (82.55mm diameter x 114.30mm width). The wheel features a composite hub and natural polyurethane tread with no protective coating. Bore diameter and bearing specifications should be verified against your specific truck model before ordering.
Q: Can I use the SU S9139-EZ on wet outdoor floors or only in refrigerated spaces?
A: The EZ compound is engineered for both wet indoor floors and cold storage environments. It performs effectively on damp concrete, epoxy coatings, and oil-contaminated surfaces. The high-traction tread prevents slipping on wet surfaces while the flexible polyurethane maintains grip in temperature extremes, making it suitable for cross-dock or loading dock operations.
Q: How does the composite hub on the SU S9139-EZ compare to steel or aluminum?
A: Composite hub construction offers a balance between weight and strength. Composite is lighter than steel, reducing overall truck weight and improving maneuverability, while providing adequate load support for electric pallet jacks and reach trucks. Composite does not rust and requires minimal maintenance compared to steel. However, inspect composite hubs for crack propagation during annual service intervals.
Q: What symptoms indicate the SU S9139-EZ wheel needs replacement?
A: Replace the wheel if traction is lost on wet or cold floors despite clean conditions, if visible cracks appear in the tread or sidewall, if the tread is worn to 50 percent of original depth, if the polyurethane is separating from the composite hub, or if bearing play exceeds 0.25 inch when rocked side to side. Loss of the EZ compound properties indicates replacement is necessary.