Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What components are included in the SU S254-A Load Wheel Assembly?
A: The SU S254-A includes a 5-inch diameter rubber wheel, sealed roller bearings, metal retaining rings, cotter pin, and axle nut. The assembly is pre-lubricated at the factory and sealed against dirt and moisture. Do not attempt to disassemble for bearing service. If seals fail, replace the entire assembly as unit repairs are not cost-effective.
Q: How do I install the SU S254-A on my narrow-aisle lift truck?
A: Remove the old wheel by unbolting the axle nut and cotter pin. Slide the wheel and bearing assembly off the spindle. Clean the spindle of rust or debris with a wire brush. Slide the new SU S254-A assembly onto the spindle until the inner race seats. Thread the axle nut by hand, then tighten to 35-40 foot-pounds with a wrench. Install the cotter pin. Do not overtighten or bearings will bind.
Q: What load capacity does the SU S254-A support per wheel?
A: Each SU S254-A assembly is rated for 4000 lbs maximum load when the truck is fully loaded and balanced across all wheels. Total truck capacity depends on number of wheels and axles. Do not exceed 4000 lbs per wheel as this causes immediate bearing wear and seal failure. Check the truck nameplate for total capacity rating.
Q: What are the symptoms of a worn-out SU S254-A assembly?
A: Warning signs include grinding or squealing noise from the wheel, side-to-side wobble when pushed by hand, flat spots or chunks missing from the tread, and unusual resistance when turning. If any symptom appears, stop using the truck immediately. Bearing failure can cause wheel lockup and tipping hazard. Replace the assembly before operating again.
Q: Can I retrofit a SU S254-A onto a truck that originally had a different wheel brand?
A: Yes. The SU S254-A fits any narrow-aisle truck with a 0.875-inch spindle and 5-inch wheel specification. Equivalents from Yale, Hyster, Crown, and Linde all use the same spindle standard. Verify spindle diameter with calipers if the truck brand is unknown. Bore mismatch is the only common fitment issue and will be obvious during installation.