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 542-A load wheel assembly?
A: The SU 542-A is a complete load wheel assembly: 4.000 inch outside diameter x 2.875 inch width wheel (4 x 2.88) made from Cushothane XL, pre-mounted with hub and bearings ready for installation onto your lift truck axle. It is a drop-in replacement if your truck originally used a 4 x 2.875 configuration.
Q: What is the difference between SU 542 and SU 542-A?
A: The SU 542 is a wheel only and requires you to transfer your existing hub assembly and bearings. The SU 542-A is fully assembled with hub and pre-installed bearings, meaning it is ready to bolt directly onto your truck axle with no additional parts or labor needed. Order SU 542-A if you want a faster plug-and-play replacement.
Q: Is the SU 542-A compatible with trucks that originally came with 4 inch wheels?
A: Yes, the SU 542-A is designed for electric lift trucks and pallet jacks that use 4.000 inch outside diameter x 2.875 inch width wheels. Verify your equipment nameplate or manual confirms 4 x 2.875 (or 4 x 2-7/8) dimensions before ordering. Bore size must be 1.875 inches to fit standard axles.
Q: How do I install the SU 542-A assembly on my lift truck?
A: Remove the retaining clip or fastener from your old wheel assembly. Slide the SU 542-A onto the axle, aligning the bore hole. Secure with your existing retaining hardware. Spin the wheel to ensure it rolls freely and does not rub against the truck frame. No adjustments, bearings, or lubrication are required at installation.
Q: What maintenance is required for the SU 542-A assembly?
A: The SU 542-A requires minimal maintenance. Inspect wheel tread and sidewalls every 3 months for wear, cracking, or damage. Keep the wheel surface clean of debris. Bearings are sealed and do not require manual lubrication. If the wheel becomes noisy or does not spin freely, the bearing may be failing and the assembly should be replaced.
Q: When should the SU 542-A assembly be replaced?
A: Replace the SU 542-A if the wheel diameter is worn below 3.9 inches, if tread is smooth or slippery, if you see flat spots or chunks missing, if the wheel wobbles or vibrates, or if the assembly is noisy during operation. Typical service life is 2-4 years in medium duty use. Harsh floors or heavy loads will shorten lifespan.