Product Description
SU S9144 Load Wheel with high-durability polyurethane tread, Shore 95A hardness. Includes precision sealed bearings in steel hub core. Compatible with Superior electric pallet jacks and warehouse truck models. Supersedes SU S9144-XL-A and equivalent to SUS9144-A. Designed for heavy-duty electric lift truck load wheel applications requiring robust poly tread and preassembled bearing setup.
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
| Core/Hub Material | Steel core with press-fit bearing bores |
| Wheel Finish | Machined steel core, polyurethane outer tread |
Part Numbers
| Manufacturer Part Number | SU S9144 |
| Cross-Reference Part Numbers | SU S9144-A, SU S9144 XL, SU S9144-XL-A, SUS9144-A |
| OEM Part Number | SUS9144-A |
| Equivalent Part Numbers | SU S9144 XL, SU9144XL, SU9144-XL |
| Replaces/Supersedes | SU S9144-XL-A, SUS9144-A |
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 |
| Tread Profile |
Frequently Asked Questions
Q: What are the dimensions and specifications of the SU S9144 load wheel?
A: The SU S9144 is a 3.250 inch diameter by 4.500 inch width load wheel (82.55mm x 114.30mm, or 3-1/4 x 4-1/2 inch notation). It is manufactured from high-durability polyurethane tread with 95A Shore A hardness. The wheel includes precision sealed bearings integrated into a steel hub core and is preassembled for plug-and-play installation on electric lift trucks. This wider wheel profile distributes load more evenly than narrower alternatives.
Q: What are the cross-reference and supersession part numbers for the SU S9144?
A: The SU S9144 carries cross-reference designations: SU S9144-A, SU S9144 XL, SU S9144-XL-A, SUS9144-A. The OEM part number is listed as SUS9144-A. The SU S9144 supersedes the SU S9144-XL-A model. Equivalent part numbers include SU S9144 XL, SU9144XL, and SU9144-XL. Always verify the specific part number on your purchase order and equipment manual to ensure compatibility.
Q: Is the SU S9144 preassembled with bearings, and does it require additional setup?
A: Yes. The SU S9144 arrives with precision sealed bearings press-fit into the steel hub core and is ready for immediate installation. No bearing assembly, lubrication, or calibration is required. Simply remove the old wheel from your lift truck hub using a wheel puller, press the new SU S9144 onto the hub until fully seated, reinstall fasteners, and tighten to specification. This preassembled design reduces downtime and installation complexity.
Q: What lift truck brands and models use the SU S9144 3.25 x 4.5 inch wheel?
A: The 3.25 x 4.5 inch wheel footprint is common across Crown, Toyota, Raymond, Yale, Hyster, and other major electric pallet jack and warehouse truck manufacturers. Compatibility depends on hub bore diameter, hub width, and bearing specification. The wider 4.5 inch width profile is often used on multi-wheel load-bearing configurations. Verify your truck model and serial number range in the equipment manual before ordering. Do not assume compatibility based on general model name alone.
Q: How do I recognize wear or failure symptoms on the SU S9144?
A: Lift the truck safely and inspect each wheel. Failure symptoms include visible flat spots, coning, or uneven wear on the tread, cracks or chunks missing from the polyurethane, separation between the tread and hub, grinding or squeaking when rotated by hand, or excessive play at the hub. Also listen for bearing noise such as grinding, clicking, or rattling, which indicates internal bearing degradation. If any symptoms are present, replace the wheel immediately before continued operation.
Q: What is the expected operating life of the SU S9144 in warehouse duty?
A: Under normal warehouse conditions with moderate load and duty cycles on smooth, dry floors, the SU S9144 typically delivers 3000 to 4500 operating hours. The 95A durometer compound and sealed bearing assembly provide reliable performance in standard temperature and humidity environments. Wet, cold, or abrasive environments reduce life by 20 to 40 percent. Inspect every 500 operating hours and replace if tread depth falls below 1/16 inch. Bearing noise or tread separation indicates immediate replacement is necessary.