Product Description
4 X 2 Poly Load Wheel Assy
Frequently Asked Questions
Q: What are the dimensions of the SU S9142 load wheel assembly?
A: The SU S9142 is a 4 inch diameter by 2 inch width polyurethane load wheel assembly. This smaller wheel format is used on compact electric pallet jacks and narrow-aisle stackers where space is limited. Verify the 4 x 2 dimension against your equipment specification plate or existing wheel before ordering. A 4 inch wheel is common on low-profile walk-behind electric pallet jacks. Do not assume a 4 x 2 wheel fits your truck without confirming the bore diameter and hub width, as these dimensions vary by manufacturer.
Q: What electric lift truck models use the SU S9142 4 x 2 load wheel?
A: The SU S9142 is designed for electric pallet jacks and stackers that require a 4 inch diameter, 2 inch width load wheel. This size is typical for compact walk-behind and rider-style electric jacks used in warehouses and retail environments. Confirm compatibility by comparing your existing wheel dimensions with the 4 x 2 specification. If your truck currently has a different size (such as 3.25 inch or 6 inch), the SU S9142 will not fit without additional modifications to the wheel hubs.
Q: Can the SU S9142 replace wheels from different brands or older models?
A: The SU S9142 is a 4 x 2 polyurethane wheel that fits equipment designed to accept that size and bore configuration. Many material handling equipment brands use the same standard wheel sizes, so a 4 x 2 wheel from one manufacturer may fit another if the bore and hub width match. However, do not assume cross-compatibility without verifying bore diameter, bore depth, and hub width on your equipment. Contact our technical team with your truck brand and model number for a definitive compatibility check.
Q: What is the typical lifespan of the SU S9142 wheel and how is it diagnosed for replacement?
A: Expect 3-5 years of service life under normal warehouse duty (8 hours per day). Replace the wheel when you observe visible flat spots, tread separation, cracks radiating from the bore, or glazing (slippery surface). Listen for squealing or grinding noises during operation, which indicate bearing failure or internal damage. Manually roll the equipment on a clean, dry floor. If it slides easily or pulls to one side, one or more wheels are failing and require replacement. Do not re-tread or repair polyurethane wheels; replacement is the only option.
Q: Is the SU S9142 suitable for wet storage, cold storage, or outdoor use?
A: The SU S9142 polyurethane wheel is designed for standard dry warehouse environments. It is not recommended for outdoor use, prolonged wet floor exposure, or extreme heat (above 140 degrees Fahrenheit). In cold storage (freezing environments), standard polyurethane may become hard and lose grip over time. If your equipment operates in wet, cold, or outdoor conditions, contact our technical team to confirm whether you need a specialized High Traction polyurethane variant or a different wheel material.
Q: What tools are required to replace the SU S9142 load wheel?
A: Replacement requires a socket set and wrench to remove the wheel axle bolt, or a bearing puller if the wheel is press-fit. Lift the truck safely on jack stands so the load wheel is not under load. If the wheel is bolted on, a hand tool replacement takes 5-10 minutes per wheel. If the wheel is press-fit, you may need a hydraulic press to remove it safely. Ensure the new wheel spins freely on the axle bearing before lowering the truck. If you lack the tools or experience, contact our technical team for removal and installation guidance.