Product Description
OEM-grade SU 9111-XL-A Load Wheel Assembly engineered for Superior pallet jacks and electric lift truck equipment. Featuring heavy-duty, cut-resistant XL polyurethane tread chemically bonded to SAE 1045 steel core for high cycle durability. Rated for up to 3600 lbs static load, 6.00 inch diameter by 2.75 inch width, with double sealed ball bearings. Compatible with standard 20 mm axle mount.
Specifications: 6.000 inch diameter x 2.750 inch width (6.000" x 2.750" | 6 x 2.75 wheel | 6 x 2-3/4 | 152.40mm x 69.85mm)
Specifications
Material
| Tread Material | High performance XL-grade polyurethane, shore A85 hardness |
| Core Material | Machined steel core, SAE 1045 |
| Finish | Polyurethane tread bonded to steel core |
Part Numbers
| Manufacturer Part Number | SU 9111-XL-A |
| OEM Part Number | SU 9111-XL-A |
Performance
| Duty Cycle Rating | Continuous, 600 cycles per day |
Wheel Dimensions
| Outside Diameter | 6 |
| Inside Diameter | 2.75 |
| Width Side to Side | 2.75 |
| Tread Profile | 3/8 Radius |
| Bore Depth | 0.83 |
| Bore Outside Diameter | 3.1491 |
Frequently Asked Questions
Q: What is the static load rating for SU 9111-XL-A and can it be exceeded?
A: SU 9111-XL-A is rated at 3600 lbs static load. Exceeding this rating accelerates bearing wear, causes permanent tread deformation, and risks bearing seizure. Always verify truck load capacity against rated pallet weight plus suspended load. Do not use as a workaround for overweight pallets.
Q: Does SU 9111-XL-A work with electric and manual pallet jacks, or electric only?
A: SU 9111-XL-A is rated for electric lift truck equipment. While the wheel fits manual Superior pallet jacks mechanically, the duty cycle rating (600 cycles per day, continuous) is optimized for electric trucks. Manual operation may extend life but exceeds the intended duty profile—verify your equipment type before ordering.
Q: How do you check if the double sealed ball bearings are failing?
A: Test for bearing failure: lift the truck and spin the wheel by hand—listen for grinding or roughness, watch for drag or jerking motion, and feel for temperature near the hub (should be cool). Sealed bearings cannot be relubricated; if grinding is present, the entire wheel assembly must be replaced. Continuing operation risks sudden wheel lock.
Q: What surface preparation is needed when installing SU 9111-XL-A on a 20 mm axle?
A: Clean the 20 mm axle of rust and debris with a wire brush or steel wool. The bore should slide on with light finger pressure—if it binds, do not force it. Install retaining hardware (clip or bolt) per truck manufacturer spec. Spin the wheel freely after installation to confirm no binding. Poor bore fit or debris will cause eccentric rotation and premature bearing failure.
Q: Is the SU 9111-XL-A tread replaceable or is it a complete wheel assembly?
A: SU 9111-XL-A is a complete bonded assembly—the polyurethane tread is chemically bonded to the SAE 1045 steel hub and cannot be separated for re-treading. When tread reaches 1/8 inch thickness, replace the entire wheel assembly. Attempting to re-bond or machine tread compromise structural integrity and bearing alignment.