Product Description
SU S163-XL-A1 is a polyurethane (97A) load wheel assembly with integral bearing and axle, suitable for electric lift trucks. Manufacturer cross-reference or technical documentation not available.
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
| Wheel Composition | Polyurethane (97A hardness) |
Part Numbers
| OEM Part Number | SU S163-XL-A1 |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 4.5 |
| Tread Profile | Angle |
| Bore Depth | 0.71 |
| Hub Width | 4.5 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What material and hardness is the SU S163-XL-A1 wheel?
A: The SU S163-XL-A1 wheel is made of Cushothane XL polyurethane compound rated at 97A durometer. This is a high-hardness, wear-resistant formulation designed for heavy-duty material handling with extended service life on industrial floors.
Q: Is the SU S163-XL-A1 assembly complete and ready to install?
A: Yes. The SU S163-XL-A1 comes fully assembled with wheel, bearing, and axle. No additional components or assembly is required. It is designed as a direct replacement for Superior-brand electric lift trucks. Simply remove the old assembly and bolt on the new one.
Q: What are the physical specifications of the SU S163-XL-A1 wheel?
A: Outside diameter: 3.250 inches (82.55 mm). Inside diameter: 1.938 inches. Width: 4.5 inches (114.30 mm). Tread profile: angle. Bore depth: 0.71 inches. Hub width: 4.5 inches. Bore outside diameter: 2.0467 inches. Always confirm these dimensions match your lift truck before ordering.
Q: How do I diagnose if the SU S163-XL-A1 bearing is failing?
A: Signs of bearing failure include rough or grinding noise when the wheel spins, lateral play or wobble in the wheel, resistance to rotation even under light hand pressure, or heat buildup around the wheel hub. If any of these symptoms appear, stop using the truck and replace the assembly. A failing bearing will quickly damage the wheel and can cause unsafe load handling.
Q: What load capacity should I expect from the SU S163-XL-A1 assembly?
A: Load capacity is determined by the truck design, wheel arrangement, and application, not by the wheel alone. The 97A durometer rating indicates high load-bearing capability and durability, but do not exceed the maximum load rating of your lift truck. Refer to the truck manufacturer manual for rated capacity. Operating beyond rated load will shorten wheel and bearing life.