Product Description
SU 9111-XL-A Load Wheel Assembly for Superior pallet trucks features a polyurethane tread bonded to a steel core, with a 6 inch outer diameter and 2.75 inch width, precision ball bearing, and 20 mm bore for use in electric lift truck parts replacement by Liftsplus.com.
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 & Construction
| Wheel Material | Polyurethane tire bonded to steel hub |
| Hub Material | Machined steel |
Part Numbers
| Manufacturer Part Number | SU 9111-XL-A |
| OEM Part Number | SU 9111-XL-A |
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: Is SU 9111-XL interchangeable with SU 9111-XL-A on Superior pallet jacks?
A: SU 9111-XL and SU 9111-XL-A are equivalent part numbers. Both are 6.000 inch diameter by 2.750 inch width load wheels with polyurethane tire bonded to steel core. They use the same 20 mm bore, fit standard Superior pallet jack axles, and carry the same 3600 lbs static load rating. You can substitute one for the other without modification.
Q: What causes the SU 9111-XL wheel to wobble during operation?
A: Wobble typically indicates a worn or damaged ball bearing. Check for: play in the wheel when you grasp it and rock side-to-side (should be tight), grinding noise during rotation, or heat buildup around the hub. If present, the double sealed ball bearing assembly needs replacement. Do not continue operating—bearing failure can cause sudden wheel lock and create a safety hazard.
Q: Can the SU 9111-XL wheel be used in continuous duty at 600 cycles per day?
A: Yes, the SU 9111-XL is rated for continuous duty at 600 cycles per day under full 3600 lbs load. The XL-grade polyurethane tread and SAE 1045 steel core are engineered for this cycle rate. Monitor tread wear quarterly—worn tread (less than 0.125 inch depth) reduces traction and must be replaced.
Q: What is the bore depth and bore diameter for axle installation on SU 9111-XL?
A: SU 9111-XL specifications: bore depth is 0.83 inch and bore outside diameter is 3.1491 inch. The bore accepts a 20 mm axle. When installing, ensure the wheel spins freely without binding and secure with appropriate retaining clip or bolt—do not rely on friction alone.
Q: How long does the polyurethane tread typically last before replacement?
A: Tread life on SU 9111-XL wheels averages 12 to 24 months in continuous 600-cycle daily duty, depending on floor condition and load profile. Smooth, clean floors extend life; rough concrete and debris shorten it. Replace when tread wears to less than 1/8 inch (0.125 inch) depth to maintain grip and reduce bearing stress.