Product Description
Yale YL 504449831-XL polyurethane load wheel assembly, 3.25 inch by 4.50 inch dimensions, 97A durometer hardness rating, cast iron core with 6203-2RS sealed bearings, designed for Yale MPE and MPB series electric pallet jack fork load support applications with dual bearing axle configuration.
Specifications
Material & Construction
| Tread Material Composition | Polyurethane elastomer, 97A durometer hardness |
| Core Construction | Cast iron hub assembly |
| Durometer Hardness Rating | 97A |
Dimensions & Configuration
| Wheel Dimensions | 3.25 inch diameter x 4.50 inch width |
| Axle Configuration | Dual bearing axle configuration |
Bearing & Hardware
| Bearing Type | 6203-2RS sealed bearings |
Part & Compatibility
| Manufacturer Part Number | YL 504449831-XL |
| Compatible Equipment Series | Yale MPE series electric pallet jacks, Yale MPB-040-AC |
| Application | Electric pallet jack fork load support |
Frequently Asked Questions
Q: What is the YL 504449831-XL load wheel assembly?
A: The YL 504449831-XL is a polyurethane load wheel assembly designed for Yale MPE and MPB series electric pallet jacks. It features 3.25 inch diameter x 4.50 inch width dimensions, 97A durometer polyurethane tread, cast iron core, and 6203-2RS sealed bearings for fork load support applications.
Q: Which Yale electric pallet jack models are compatible with the YL 504449831-XL?
A: This wheel assembly is compatible with Yale MPE series electric pallet jacks and Yale MPB-040-AC models. Verify your equipment model matches these specifications before ordering to ensure proper fit and function.
Q: What does the 97A durometer hardness rating mean?
A: The 97A durometer rating indicates polyurethane tread hardness on the Shore A scale. This provides excellent wear resistance and resists flatspotting compared to softer compounds. The 97A hardness extends service intervals and reduces replacement frequency in high-cycle warehouse operations.
Q: What are the benefits of the sealed 6203-2RS bearings?
A: The 6203-2RS bearings are fully sealed with rubber covers on both sides, protecting against dirt and moisture ingress. This sealed design minimizes grease loss and reduces contamination, extending bearing life and reducing maintenance requirements in warehouse environments.
Q: How does the cast iron core construction benefit durability?
A: Cast iron hub construction provides superior strength and rigidity compared to lighter materials. This robust core, combined with polyurethane tread and sealed bearings, creates a long-lasting assembly that withstands repetitive loading and harsh warehouse conditions while maintaining precise axle alignment.
Q: What maintenance is required for the YL 504449831-XL?
A: Inspect the wheel quarterly for tread wear, flatspotting, or bearing play. The sealed bearing design requires minimal lubrication compared to open designs. Monitor for abnormal noise or steering difficulty, which indicate bearing wear. Replace the assembly if tread depth falls below 50 percent of original or if bearing movement is detected.
Q: Is this wheel suitable for wet or freezer storage areas?
A: The 97A polyurethane provides adequate grip for standard warehouse conditions. The sealed bearing design performs well in cold storage due to grease retention. For wet floors or extreme temperature applications, verify floor compatibility with our team before ordering to confirm suitability for your specific environment.