Product Description
Load Wheel Assembly
Specifications: 3.250 inch diameter x 4.310 inch width (3.250" x 4.310" | 3.25 x 4.31 wheel | 3-1/4 x 4.31 | 82.55mm x 109.47mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.875 |
| Width Side to Side | 4.31 |
| Bore Depth | 0.2 |
| Hub Width | 4.31 |
| Bore Outside Diameter | 2.07 |
Frequently Asked Questions
Q: What is included in the SU 446-A Load Wheel Assembly?
A: The SU 446-A is a complete wheel assembly. It includes the 3.25 x 4.31 inch Cushothane XL wheel mounted on a hub with bearings and all mounting hardware. No additional components are needed for installation.
Q: What is the difference between SU 446 and SU 446-A?
A: The SU 446 is the wheel component only. The SU 446-A is the complete assembly with hub, bearings, and fasteners. Choose SU 446 if you need to reuse your existing hub; choose SU 446-A for a complete bolt-on replacement.
Q: How do I install the SU 446-A assembly?
A: Remove your axle pin or fastener, slide the old assembly off the axle, and slide the SU 446-A on. Secure with your axle pin or bolt and cotter pin. Installation takes 5-10 minutes per wheel with basic hand tools. No press or specialized equipment needed.
Q: Is the SU 446-A compatible with all electric lift trucks?
A: No. The SU 446-A is designed for trucks with the standard 3.25 x 4.31 wheel mounting. Verify your axle bore diameter, axle pin size, and wheel well clearance before ordering. Consult your truck manual or contact the manufacturer for compatibility confirmation.
Q: What maintenance is required for the SU 446-A?
A: Inspect the wheel monthly for cracks, flats, or debris. Ensure the wheel rotates freely without grinding sounds. Check that the axle pin or fastener remains tight. Clean the wheel of dirt and oil buildup. No lubrication is needed for sealed bearings.
Q: How long will the SU 446-A assembly last?
A: Typical lifespan is 2-4 years with regular indoor use on smooth concrete. Heavy outdoor use or rough floors can reduce life to 12-18 months. The Cushothane XL material outlasts rubber wheels by 30-50 percent under similar conditions.