Product Description
SU S9168-XL is a poly load wheel assembly with 97A polyurethane hardness, suitable for electric lift truck applications, designed as a direct replacement for specified Liftsplus.com and compatible Superior models. This component offers excellent abrasion resistance, non-marking operation, and is equipped for use with precision ball bearings.
Specifications: 3.250 inch diameter x 4.422 inch width (3.250" x 4.422" | 3.25 x 4.42 wheel | 3-1/4 x 4.422 | 82.55mm x 112.32mm)
Specifications
Part Numbers
| Manufacturer Part Number | SU S9168-XL-A |
| OEM Part Number | S9168-XL |
| Cross-Reference Part Numbers | Supersedes SU S9168-XL, equivalent to S9168-XL-A, compatible with Superior and Liftsplus.com applications |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 2.1649 |
| Width Side to Side | 4.422 |
| Bore Depth | 0.79 |
| Hub Width | 4.422 |
| Bore Outside Diameter | 2.1649 |
Frequently Asked Questions
Q: What are the exact dimensions of SU S9168-XL?
A: SU S9168-XL measures 3.25 inch outside diameter by 4.422 inch width (also listed as 3.250 x 4.422, 3-1/4 x 4.422, 82.55mm x 112.32mm). The inside bore diameter is 2.1649 inch. These dimensions are precise and must match your truck hub configuration exactly. Confirm all measurements before ordering to avoid installation problems.
Q: What is the difference between 97A and other polyurethane hardness ratings?
A: SU S9168-XL uses Cushothane XL polyurethane at 97A hardness, which is very hard and wear-resistant. Higher hardness (97A vs 85A or 90A) means the wheel resists abrasion and lasts longer on concrete floors. The trade-off is reduced shock absorption on rough or uneven surfaces. 97A hardness is appropriate for smooth warehouse floors and daily material handling operations.
Q: What does non-marking operation mean?
A: Non-marking operation means the polyurethane tread does not leave visible rubber marks or stains on clean warehouse floors or finished surfaces. This is important in food processing, pharmaceutical, or retail environments where floor cleanliness is critical. The Cushothane XL material on SU S9168-XL is formulated to avoid marking even during sharp turns.
Q: Is SU S9168-XL a drive wheel or load wheel?
A: SU S9168-XL is a load wheel assembly designed for compressive loading in electric lift truck applications. Do not use as a drive wheel. Drive wheel use will cause rapid wear, bearing failure, and premature replacement. Consult your truck manual to identify load wheel positions. Always install wheels in correct positions to maintain safe truck operation.
Q: What is the bore tolerance of SU S9168-XL, and why does it matter?
A: The 2.1649 inch bore has a plus or minus 0.005 inch tolerance. This means acceptable bore diameter ranges from 2.1599 to 2.1699 inch. Tight tolerances ensure the wheel mounts securely without wobbling. If your truck axle is outside this tolerance range, SU S9168-XL will not fit properly. Measure your axle with precision calipers before ordering. A poor fit causes vibration, steering problems, and unsafe operation.