Product Description
Crown CR 77084-SU-XL is a polyurethane load wheel measuring 3.25 inches in diameter and 3.25 inches in width, with a tread hardness of 97 Shore A. Intended for use on Crown electric lift truck models, it features XL compound polyurethane for high load, abrasion resistance, and longevity in demanding material handling environments. Supplied without bearings and recommended for heavy duty cycles.
Specifications
Material & Construction
| Tread Material | Polyurethane elastomer |
| Bonding Technology | Polyurethane chemically bonded to core via XL3 bonding process |
Part Numbers
| OEM Part Number | CR 77084-SU-XL |
| Cross-Reference Part Numbers | CR077084, 077084, Crown 077084 |
| Compatible OEM Replacement | Crown 77084-302 |
Frequently Asked Questions
Q: What makes the CR 77084-SU-XL different from standard load wheels?
A: The CR 77084-SU-XL features XL compound polyurethane bonded to the core via the XL3 bonding process, providing superior abrasion resistance and load capacity. The 97 Shore A hardness rating is higher than standard 95A wheels, making it suitable for heavy-duty cycles with frequent impacts and extended equipment runtime.
Q: What are the dimensions and specifications of the CR 77084-SU-XL?
A: The CR 77084-SU-XL measures 3.25 inches in both diameter and width. It features 97 Shore A hardness polyurethane elastomer and is supplied without bearings. The XL3 bonding technology chemically adheres the polyurethane tread to the core, preventing separation under high load and repetitive stress.
Q: Which Crown equipment models is the CR 77084-SU-XL compatible with?
A: The CR 77084-SU-XL is designed for Crown electric lift truck models. Cross-reference indicates it is compatible with Crown 77084-302 applications. Confirm your specific equipment model and serial range before ordering, as bearing bore tolerances and mounting interfaces vary across production runs.
Q: What is the XL3 bonding process used in the CR 77084-SU-XL?
A: XL3 is a polyurethane chemically bonding technology that adheres the polyurethane elastomer tread permanently to the wheel core. This bonding method prevents tread separation, delamination, and flat spotting in heavy-duty and high-frequency material handling applications where standard mechanical adhesion would fail.
Q: When should the CR 77084-SU-XL be replaced?
A: Replace the CR 77084-SU-XL when polyurethane tread depth is significantly reduced, visual flat spotting appears on load-bearing surfaces, or the wheel no longer rotates freely. The 97A hardness provides extended life in demanding operations, but heavy impact or overload events can accelerate wear regardless of material durability.