Product Description
LOAD WHEEL ASSEMBLY
Specifications: 4.000 inch diameter x 2.875 inch width (4.000" x 2.875" | 4 x 2.88 wheel | 4 x 2-7/8 | 101.60mm x 73.02mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 4 |
| Inside Diameter | 1.875 |
| Width Side to Side | 2.875 |
| Tread Profile | Angle |
| Bore Depth | 0.75 |
| Hub Width | 2.875 |
| Bore Outside Diameter | 2.4404 |
Frequently Asked Questions
Q: What is included in the SU S542-XL-A kit and how does it differ from ordering the wheel and bearing separately?
A: The SU S542-XL-A is a complete load wheel assembly with the XL3 bonded wheel, machined steel hub, and pre-pressed bearing already assembled. This saves labor and ensures factory-calibrated bearing preload. Ordering the wheel and bearing separately risks improper bearing installation or mismatched components. The assembly is ready to press onto your axle.
Q: Is the SU S542-XL-A compatible with Yale, Crown, and Hyster electric lift trucks?
A: The SU S542-XL-A fits most electric pallet truck brands that use a 1.875 inch bore, 20mm metric bore, or 3/4 inch imperial shaft. However, bore depth and outer hub diameter must match. Cross-reference your truck model and serial number against the specifications before purchasing. When in doubt, contact the manufacturer or provide the axle dimensions for verification.
Q: How much time does it take to install the SU S542-XL-A assembly?
A: Installation requires 30 to 45 minutes per axle. Steps are remove the truck axle, press off the old wheel using an arbor press (5 to 10 tons), slide the new SU S542-XL-A onto the axle using 2 to 5 tons pressure, and reinstall the axle. Use slow, even pressure and never use impact tools. Total truck downtime is usually 1 to 2 hours for both front wheels.
Q: What is the warranty on the SU S542-XL-A assembly and what does it cover?
A: Warranty terms vary by supplier but typically cover bearing defects and tread manufacturing flaws for 12 months from purchase. Warranty does not cover damage from improper installation, overloading, or floor debris impact. Tread wear from normal use is not covered. Register the purchase and retain the receipt to validate warranty eligibility.
Q: Can the bearing in the SU S542-XL-A be serviced or regreased in the field?
A: No. The SU S542-XL-A is a sealed assembly with a press-fit bearing. The bearing is not accessible without destroying the assembly. If the bearing fails, the entire wheel assembly must be replaced. Sealed bearings require no field maintenance but cannot be rebuilt once they fail.
Q: What maintenance schedule should I follow for the SU S542-XL-A during operation?
A: Inspect the wheel weekly for tread wear, flat spots, or debris buildup. Check bearing play by hand-rocking the wheel side-to-side. Acceptable play is less than 0.125 inches. Clean the tread and hub surface monthly to prevent debris lodging. Replace the assembly when tread wear exceeds 25 percent or bearing play increases beyond normal. Heavy-use trucks may require replacement every 12 to 24 months.