Product Description
SU 9144 Load Wheel features a 95A durometer red polyurethane tread bonded to a white polypropylene core, measuring 3.5 inches in diameter and 1.25 inches wide. Designed for electric lift trucks and pallet jacks, this wheel delivers a 250 lb rated load capacity and utilizes a Delrin bearing for reduced rolling resistance. Polyurethane tread is non-marking, providing floor protection and resisting oils, grease, and harsh chemicals.
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)
Specifications
Material
| Tread Thickness | Up to 1 inch |
Part Numbers
| Manufacturer Part Number | SU 9144 |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 4.5 |
| Bore Depth | 0.512 |
| Hub Width | 4.5 |
| Bore Outside Diameter | 2.1649 |
Frequently Asked Questions
Q: Is SU 9144 compatible with Yale pallet jacks and what is the load capacity?
A: SU 9144 is a direct fit for Superior and Yale electric lift trucks with 3.25 inch diameter hub mounting. It has a 250 lb rated load capacity per wheel. Always verify your jack has a 1.938 inch inside diameter and 0.512 inch bore depth before ordering. Exceeding 250 lb per wheel will accelerate tread wear and bearing failure.
Q: What is the difference between SU 9144 and SU 9144-A?
A: SU 9144 is a wheel only, while SU 9144-A is a complete wheel assembly that includes pre-installed bearings and hub. If your jack needs immediate replacement, order SU 9144-A. If you only need the wheel tread and can transfer your existing hub and bearings, order SU 9144.
Q: Does the 95A durometer polyurethane tread require special cleaning or maintenance?
A: SU 9144 uses non-marking polyurethane that resists oils, grease, and harsh chemicals. Clean with mild soap and water only. Do not use harsh solvents or abrasive pads, as these degrade the tread bond. Inspect tread thickness monthly. Replace when tread depth falls below 0.25 inch to prevent bearing damage.
Q: What bearing type does SU 9144 use and can it be replaced separately?
A: SU 9144 uses a Delrin bearing for low-friction operation. Delrin bearings are sealed and non-replaceable. If the bearing fails, you must replace the entire wheel assembly. Symptoms of bearing failure include grinding noise, uneven rolling, or wheel wobbling.
Q: How do I diagnose if my SU 9144 wheels are worn out?
A: Check tread thickness using a ruler or depth gauge. Worn tread appears flat or shiny instead of textured. If tread is below 0.25 inch, the wheel needs replacement. Also listen for grinding or squealing during operation. If the jack pulls to one side, individual wheels may be worn unevenly. Replace wheels in pairs or all four at once to ensure even load distribution.
Q: What are the metric dimensions for SU 9144 if I need international equivalents?
A: SU 9144 measures 82.55mm diameter x 114.30mm width. The inside diameter is 49.25mm and bore depth is 13mm. Use these metric specs when cross-referencing with European or Asian lift truck manufacturers. Always verify bore size and material before ordering equivalents.