Product Description
SU 9131-XL-A Polyurethane Load Wheel Assembly with bonded polyurethane tread, 3.00 inch diameter, 3.66 inch width, 20 mm sealed precision bearing, steel core, for Superior electric pallet jack. Cross-references: SU9131-XL, SU9131XL, 9131XL. 97A durometer load wheel for rigorous industrial applications.
Specifications: 8.000 inch diameter x 4.000 inch width (8.000" x 4.000" | 8 x 4 wheel | 8 x 4 | 203.20mm x 101.60mm)
Specifications
Part Numbers
| Cross-Reference Part Numbers | Replaces SU9131-XL, supersedes SU9131XL, equivalent to 9131XL |
| OEM Part Number | SU 9131-XL-A |
| Manufacturer Part Number | SU9131-XL-A |
Wheel Dimensions
| Material | Poly XL 97A |
| Outside Diameter | 8 |
| Inside Diameter | 2.56 |
| Width Side to Side | 4 |
| Bore Depth | 0.91 |
| Bore Outside Diameter | 2.8338 |
Frequently Asked Questions
Q: How is SU 9131-XL-A different from SU 9131-A?
A: The primary difference is the -A suffix denotes an assembly variant (part number SUS9131-XL-A with assembly SKU L509131RA1). Both share 8 x 4 inch dimensions, 97A durometer, and cross-reference compatibility. The -A variant may include pre-assembled bearings or a protective shipping configuration.
Q: What bearing size does SU 9131-XL-A use?
A: SU 9131-XL-A uses a 20mm sealed precision ball bearing. The bore outside diameter is 2.8338 inch, bore depth is 0.91 inch, and inside diameter is 2.56 inch. Verify these dimensions against your axle before ordering replacement bearings or the full assembly.
Q: Is the steel core on SU 9131-XL-A replaceable?
A: No. The steel core and polyurethane tread are bonded as a complete assembly using the XL3 chemical process. Attempting to remove or replace either component will compromise the bond integrity and create a safety hazard. Replace the entire wheel assembly when tread or core is damaged.
Q: What symptoms indicate SU 9131-XL-A bearing failure?
A: Bearing failure presents as: wheel wobble or side-to-side movement, grinding or squealing noise during rotation, seized or extremely stiff wheel movement, or visible wear flat on the 20mm bearing races. Replace the wheel assembly immediately as continued operation causes core damage and steering failure.
Q: Can I install SU 9131-XL-A on a used axle?
A: Yes, if the axle is clean, straight, and undamaged. Inspect the axle for pitting, scoring, or corrosion. Light corrosion can be cleaned with fine steel wool. Deep pitting or bent axles must be replaced to ensure proper bearing seating and wheel alignment. A worn axle will cause premature bearing failure in the new assembly.
Q: Does SU 9131-XL-A come pre-lubricated?
A: Yes. SU 9131-XL-A sealed precision bearings come factory pre-packed with grease. Do not apply additional lubricant at installation. After 6 months in service, switch to light oil lubrication through the bearing seal access points. Over-greasing causes bearing drag and reduces jack speed.