Product Description
The SU S351 is a 5 x 2.625 inch polyurethane load wheel with cast iron core, precision ball bearing construction, and high durability design for electric lift truck and pallet jack load wheel assemblies. Cross-references include SU 351, SU S351-XL, SUS351, and SU S351-A.
Specifications
Material
| Tread Material | Polyurethane (molded) |
| Tread Hardness | 98 Shore A |
Part Numbers
| Manufacturer Part Number | SU S351 |
| Product Name | 5 x 2.625 Poly Load Wheel |
| OEM Part Number | SU S351-A |
| Cross-Reference Part Numbers | Equivalent to SU 351, SU S351-XL, SUS351, SU S351-A |
| Supersedes | Supersedes SU 351-XL |
Frequently Asked Questions
Q: What are the cross-reference part numbers for the SU S351?
A: SU S351 is equivalent to SU 351, SU S351-XL, SUS351, and SU S351-A according to manufacturer records. However, always verify dimensions and bore specifications before assuming interchangeability. Part numbering variations exist across different OEM suppliers and equipment eras. Order by exact SKU to ensure correct material and configuration for your application.
Q: What are the specifications for the SU S351 polyurethane load wheel?
A: Outside diameter is 5.0 inches. Tread width is 2.625 inches. Tread material is polyurethane, molded to 98 Shore A hardness. This hardness rating provides good grip on smooth floors while resisting aggressive wear. The wheel is designed for electric pallet trucks and lift equipment with standard duty cycles. Verify that your equipment calls for a 5 x 2.625 wheel before ordering.
Q: Is the SU S351 compatible with my Yale electric pallet truck?
A: Yale electric pallet trucks manufactured between 2005 and 2020 commonly use 5 x 2.625 load wheels. Check your truck nameplate or manual for wheel diameter and width specifications. If your truck requires a different size, such as 5 x 3.0 or 4.5 x 2.0, the SU S351 will not fit. Do not force a mismatched wheel onto an axle, as this causes binding and bearing damage.
Q: What does the 98 Shore A hardness rating mean for wheel performance?
A: Shore A hardness measures polyurethane stiffness on a scale of 0 to 100. A rating of 98 Shore A means the wheel is hard and resistant to deformation. Hard wheels grip smooth floors well, maintain shape under high loads, and resist wear from repeated rolling. Softer wheels grip rougher surfaces better but wear faster and generate more heat. For most warehouse floors, 98 Shore A is standard and provides a good balance of durability and performance.
Q: When should I replace the SU S351 wheel?
A: Replace the wheel when flat spots or visible wear patterns develop, when chunks of material are missing, or when the wheel makes noise during rolling. If the truck steers poorly or pulls to one side, inspect the wheel tread. Uneven wear across wheels suggests misalignment or overload on one side. Typical replacement interval is 2 to 4 years depending on floor conditions and usage intensity. Do not operate with severely worn wheels, as bearing stress increases significantly.
Q: Does the SU S351 require greasing or maintenance?
A: The SU S351 wheel has a greaseable bearing that benefits from periodic lubrication. Grease the bearing every 6 to 12 months or annually if the truck operates in a wet environment. Use a standard lithium grease. Do not over-grease, as excess grease attracts floor debris and accelerates bearing wear. If the bearing spins rough even after greasing, the bearing has worn out and the wheel assembly must be replaced.