Product Description
The Yale YL 504574280 is a complete load wheel assembly designed for Yale MPB 040 series electric pallet jacks. This factory-spec replacement features a 3.25-inch diameter wheel with 4.50-inch width, combining Durarun 95A polyurethane tread bonded to a cast iron hub for reliable load-bearing performance. The assembly includes factory-installed 6203-2RS double sealed bearings, axle hardware, and lubrication fittings. A direct replacement for multiple legacy Yale part numbers including 650546 and 0652696-00.
Specifications
Dimensions & Specifications
| Wheel Diameter | 3.25 inches |
| Wheel Width | 4.50 inches |
| Tread Material | Polyurethane, 95A shore hardness |
| Core Material | Cast iron hub |
| Bearing Type | 6203-2RS double sealed ball bearings, 17mm bore |
| Bearing Seal Type | 2RS double rubber seals for contamination protection |
Part Numbers & Compatibility
| Manufacturer Part Number | YL 504574280-A |
| Cross-Reference Part Numbers | YL504574280, YT504574280, YT 504574280-A, 504574280 |
| Supersedes Yale Part Numbers | 650546, 0652696-00, 0652696-01, 0655092-00, 2302392 |
| Compatible Equipment Models | Yale MPB 040 series electric pallet jacks |
| Included Components | Wheel assembly, bearings, axle hardware, lubrication fittings |
Frequently Asked Questions
Q: What are the dimensions of the YL 504574280 load wheel assembly?
A: The wheel features a 3.25 inch diameter and 4.50 inch width. It is designed with a polyurethane tread bonded to a cast iron core, combining durability with reliable load-bearing performance on standard warehouse floors.
Q: Which Yale equipment is compatible with the 504574280?
A: This load wheel is compatible with Yale MPB 040 series electric pallet jacks. Always verify your equipment model and serial number against the original parts list before ordering to confirm fitment.
Q: What bearing system does this wheel assembly include?
A: The assembly includes factory-installed 6203-2RS double sealed bearings with a 17mm bore. The 2RS seal designation provides dual rubber seals on both sides for protection against contamination. Axle hardware and lubrication fittings are also included.
Q: What part numbers does this wheel supersede?
A: The 504574280 supersedes older Yale part numbers including 650546, 0652696-00, and 2302392. It cross-references with YL504574280, YT504574280, and YT 504574280-A.
Q: What is the typical service life of this load wheel?
A: Polyurethane load wheels typically provide 2 to 5 years of service under normal warehouse operation, depending on floor type, usage frequency, and load weight. Wet or cold storage environments may reduce service life. Replace when the tread becomes worn, cracked, or develops flat spots.
Q: Why is 95A durometer polyurethane used for this wheel?
A: The 95A shore durometer rating provides a firm load-bearing compound that resists deformation under equipment weight while offering shock absorption and floor protection. This hardness level balances durability with smooth operation on standard indoor warehouse floors.