Crown Polyurethane Load Wheel - 3.25 Inch
CR 77084-SU-XL
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Compatibility
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Reference Diagrams
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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 |
| Compound | XL compound polyurethane |
| Tread Hardness | 97 Shore A |
Dimensions & Specifications
| Bearings | Supplied without bearings |
| Application | Heavy-duty cycles, high-load material handling |
Part Identification
| Part Number | CR 77084-SU-XL |
| Cross-Reference Numbers | CR077084, 077084, Crown 077084 |
| Direct Replacement | Crown 77084-302 |
Frequently Asked Questions
Q: What distinguishes the CR 77084-SU-XL from standard load wheels?
A: The CR 77084-SU-XL features XL compound polyurethane bonded via the XL3 bonding process, providing superior abrasion resistance and load capacity compared to standard 95A wheels. The 97 Shore A hardness rating enables reliable performance in heavy-duty cycles with frequent impacts and extended runtime.
Q: What are the key specifications of the CR 77084-SU-XL?
A: The wheel with 97 Shore A hardness polyurethane elastomer. It is supplied without bearings and uses XL3 bonding technology to chemically adhere the polyurethane tread to the core, preventing separation under high load and repetitive stress.
Q: Which Crown equipment models is this wheel compatible with?
A: The CR 77084-SU-XL is designed for Crown electric lift truck and pallet jack models. It is listed as a direct replacement for Crown 77084-302 applications. Consult your equipment documentation or contact Crown directly to verify compatibility with your specific model and serial range, as bearing bore tolerances vary across production runs.
Q: How does the XL3 bonding process enhance wheel performance?
A: XL3 is a polyurethane chemical bonding technology that permanently adheres the elastomer tread to the wheel core, preventing tread separation, delamination, and flat spotting. This process is particularly beneficial in heavy-duty and high-frequency material handling applications where standard mechanical bonding may fail.
Q: What maintenance and storage recommendations apply to the CR 77084-SU-XL?
A: Store wheels in a cool, dry location away from direct sunlight and ozone sources. Inspect regularly for tread wear, flat spotting, or visible cracks. Replace the wheel when tread depth is significantly reduced, flat spotting appears, or the wheel no longer rotates freely. Avoid exposure to harsh chemicals and extreme temperatures during storage.
Q: When should the CR 77084-SU-XL be replaced?
A: Replace the wheel when polyurethane tread depth is noticeably reduced, visual flat spotting appears on load-bearing surfaces, or the wheel no longer rotates freely. While 97A hardness provides extended life in demanding operations, heavy impacts or sustained overload events can accelerate wear.
