Product Description
Crown OEM CR 312021 load wheel assembly for electric lift trucks. Heavy-duty polyurethane tread, 5 inch diameter, 4.12 inch tread width, 2.44 inch bore diameter with shoulder bearing assembly, optimized for long runs and heavy loads. Includes cross-reference part numbers CR312021-003-A and CR312021-1-SMH.
Specifications
Material & Construction
| Tread Material | Polyurethane, Shore A durometer 95A |
Part Numbers
| Manufacturer Part Number | CR 312021 |
| OEM Part Number | CR312021 |
| Cross-Reference Part Numbers | CR312021-003-A, CR312021-1-SMH |
Frequently Asked Questions
Q: What are the dimensions of the CR 312021 load wheel assembly?
A: The CR 312021 has a 5 inch outer diameter, 4.12 inch tread width, and 2.44 inch bore diameter with shoulder bearing assembly. These dimensions make it compatible with standard electric pallet jack and lift truck wheel hubs.
Q: What material is the CR 312021 tread made from?
A: The CR 312021 features heavy-duty polyurethane tread with a Shore A durometer rating of 95A. This compound provides excellent load capacity, wear resistance, and floor grip without damaging finished concrete or sealed floors common in warehouses and distribution centers.
Q: Which Crown electric lift trucks use the CR 312021 load wheel?
A: The CR 312021 is optimized for Crown electric pallet jacks and electric stand-on riders designed for long runs and heavy loads. Cross-reference parts CR312021-003-A and CR312021-1-SMH are equivalent fitments for this application.
Q: Why does the CR 312021 include a shoulder bearing assembly?
A: The shoulder bearing assembly supports radial and axial loads while the wheel rotates under the weight of the load and operator. This design reduces wear on the hub and extends overall wheel assembly life in continuous-use material handling applications.
Q: What is the lifespan of the CR 312021 load wheel?
A: The CR 312021 typically lasts 12 to 24 months in moderate-use warehouse environments. Lifespan depends on tread wear, floor conditions, load weight, and operator maintenance. Inspect wheels monthly for flat spots, cracks, or bearing noise.
Q: What are the cross-reference part numbers for the CR 312021?
A: Cross-reference parts for the CR 312021 are CR312021-003-A and CR312021-1-SMH. These are equivalent assemblies for Crown electric trucks. Verify bore diameter and tread width match your equipment before ordering.