Product Description
Load Wheel
Specifications: 3.250 inch diameter x 5.750 inch width (3.250" x 5.750" | 3.25 x 5.75 wheel | 3-1/4 x 5-3/4 | 82.55mm x 146.05mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 5.75 |
| Bore Depth | 1.447 |
| Hub Width | 5.75 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What are the exact dimensions and specifications of the SU 348 load wheel?
A: The SU 348 is a 3.25 inch outer diameter by 5.75 inch width load wheel (82.55mm x 146.05mm metric). Inside diameter is 1.938 inches, bore outside diameter is 2.0467 inches, bore depth is 1.447 inches, and hub width is 5.75 inches. Material is Cushothane XL polyurethane. These specifications must match your jacks existing wheel configuration before installation.
Q: Is SU 348 compatible with SU 248-XL-A or other Superior wheel models?
A: No. SU 348 and SU 248-XL-A share the same 3.25 inch outer diameter but differ in width and bore specifications. SU 348 is 5.75 inches wide with a 1.938 inch inside diameter, while SU 248-XL-A is 6 inches wide with a 1.875 inch inside diameter. They cannot be substituted. Using an incorrect wheel assembly causes poor tracking, bearing stress, and premature failure. Verify bore specifications exactly before purchasing.
Q: What OEM wheels are equivalent to the SU 348?
A: SU 348 may be equivalent to specific load wheels from Crown, Toyota, Raymond, Yale, Hyster, Linde, or other pallet jack OEMs if their specifications match: 3.25 inch diameter, 5.75 inch width, 1.938 inch bore inside diameter, and 2.0467 inch bore outside diameter. Provide Superior with your current OEM part number to confirm equivalence. Do not assume compatibility based on wheel diameter alone.
Q: How do I replace a worn SU 348 wheel and what safety precautions are required?
A: Lift the pallet jack safely on blocks or a lift stand so all wheels clear the ground. Remove the axle pin or wheel fasteners using an appropriately sized wrench or socket. Slide the worn SU 348 off the axle. Install the new SU 348 by sliding it onto the axle and securing it with the original fastener or pin. Ensure the wheel spins freely and does not bind. Do not operate the jack until all four wheels are installed and secure. Never work under a jack supported only by hydraulic pressure.
Q: What floor conditions are suitable for SU 348 wheels and what is their load capacity?
A: SU 348 uses Cushothane XL material designed for smooth, clean, dry indoor warehouse floors. Do not operate on wet, oily, or debris-covered surfaces as grip is reduced and wheels slip or wear unevenly. Load capacity depends on your jacks frame rating, typically 2000 to 5500 pounds total across four wheels. Never exceed your jacks nameplate maximum load. Overloading causes wheel flattening and bearing failure.
Q: What is the expected lifespan of SU 348 wheels and how should they be maintained?
A: Under normal warehouse use, SU 348 wheels typically last 18 to 36 months. Inspect wheels monthly for cracks, flat spots, uneven wear, or reduced rotation. Clean dirt and debris from the wheel bore and tread weekly. Do not use silicone-based lubricants as they degrade polyurethane. If wheels develop flat spots or no longer spin freely, replace the entire set of four wheels. Do not mix old and new wheels on the same jack.