Product Description
3.25 X 4.3 Poly Load Wheel
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 are the exact dimensions of the SU 446 load wheel?
A: The SU 446 measures 3.25 inches (82.55mm) in outside diameter and 4.31 inches (109.47mm) in width. Inside diameter is 1.875 inches with a 2.07 inch bore outside diameter. Bore depth is 0.2 inches. These dimensions are critical for fitment verification.
Q: What material is the SU 446 wheel made from?
A: The SU 446 is constructed from Cushothane XL, a durable polyurethane elastomer. This material resists abrasion, moisture, and chemicals better than standard rubber. It provides good load-bearing capacity while remaining flexible for shock absorption.
Q: Is the SU 446 a wheel only or does it include a hub?
A: The SU 446 is the wheel component only. You will need to remove your existing wheel from the hub and press or bolt the SU 446 onto your current hub assembly. If you need a complete ready-to-install unit, order the SU 446-A assembly instead.
Q: What lift truck models use the 3.25 x 4.31 wheel size?
A: The 3.25 x 4.31 dimension is common on mid-range pallet jacks and electric lift trucks. Verify your current wheel size by measuring or checking your truck manual. Cross-reference the bore diameter and width to ensure the SU 446 fits your hub.
Q: Can I install the SU 446 myself or do I need special equipment?
A: If your hub uses a bolt-on design, basic wrenches work. If your hub requires a press fit, you need access to a bearing press or professional installer. Do not attempt to hammer or force fit a wheel. Improper installation can damage the hub and bearing.
Q: What is the load capacity of the SU 446 wheel?
A: Load capacity depends on the hub bearing size and truck design, not the wheel alone. Verify your truck rated capacity in the manual. The SU 446 Cushothane XL material is rated for standard industrial pallet jack duties. Do not exceed truck specifications.