Product Description
Load Wheel
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 are the specifications for the SU 542 load wheel?
A: The SU 542 is a 4.000 inch outside diameter x 2.875 inch width load wheel (4 x 2.88, or 4 x 2-7/8 fractional, equivalent to 101.60mm x 73.02mm). Inside diameter is 1.875 inches with a 2.4404 inch bore outside diameter. Bore depth is 0.75 inch, hub width is 2.875 inches, and the tread profile is angle-cut for optimal grip.
Q: How does the SU 542 differ from the SU 535-A?
A: The SU 542 is a larger wheel (4 inches versus 3.25 inches diameter) and is sold as a wheel only, not an assembly. The SU 535-A is an assembled unit ready to install. If you need the SU 542 as a complete assembly, order the SU 542-A instead. The SU 542 requires separate mounting onto your existing axle hardware.
Q: Can I use the SU 542 on a lift truck that currently has 3.25 inch wheels?
A: No. The SU 542 is 4 inches in diameter and will not fit into a 3.25 inch wheel well or mounting position. Verify your equipment is designed for 4 inch wheels before ordering. Mixing wheel sizes on the same truck creates tracking problems and safety hazards. All wheels on a truck must match in diameter.
Q: What does angle tread profile mean on the SU 542?
A: Angle tread profile means the rubber surface has angled grooves cut across the wheel face. This design improves traction on smooth concrete floors and reduces slipping when starting, stopping, or turning loaded equipment. Angle tread is standard for electric lift trucks and forklifts operating indoors on hard flooring.
Q: Do I need any tools or modifications to install the SU 542 wheel on my axle?
A: The SU 542 is a bare wheel that slides onto your existing axle. You will need a socket wrench or appropriate fastener tool to remove your old wheel and secure the new one with your existing retaining hardware. If your axle is damaged or oversized, the wheel will not seat properly. Inspect the axle before installation.
Q: How often should I inspect or replace the SU 542 wheel?
A: Inspect the SU 542 every 3 months for flat spots, cracking, or visible wear. Replace when the wheel diameter measures less than 3.9 inches or when tread depth is worn smooth. High-traffic warehouses may need replacement every 12-24 months. Low-traffic operations may see 3-5 years of service. Rotate wheels between positions periodically to extend lifespan.