Product Description
LOAD WHEEL
Frequently Asked Questions
Q: What is the equivalent cross-reference for SU S556-XL and does it fit standard electric lift truck models?
A: SU S556-XL is a standard load wheel for mid-range electric lift trucks. Cross-reference models include equivalent wheels from Linde, Hyster, and Crown pallets in the same diameter class. Always verify your truck model serial number range before ordering, as XL designation indicates increased load capacity. This wheel fits trucks manufactured between 2012 and present in the S5 series.
Q: How do I diagnose if the SU S556-XL wheel needs replacement?
A: Replace the wheel if you observe flat spots, visible cracks in the polyurethane, wobbling during operation, or uneven wear patterns. If the truck pulls to one side or vibrates at speeds above 5 mph, the wheel is likely damaged. Check for moisture or oil contamination under the wheel hub, which causes premature degradation.
Q: What tools and safety steps do I need to replace the SU S556-XL wheel?
A: You need a hydraulic jack rated for 3000 pounds minimum, a wheel wrench or socket set, and a flathead screwdriver to remove the retaining clip. Always park on a level surface, apply the parking brake, and use wheel chocks behind the wheels. Do not work under the truck supported only by a jack. Remove the retaining clip first, then slide the wheel off the axle shaft.
Q: What is the load capacity and operating temperature range for SU S556-XL?
A: SU S556-XL is rated for a maximum load of 2000 pounds per wheel when used as part of a four-wheel truck configuration. Operating temperature range is minus 10 degrees Celsius to plus 60 degrees Celsius. Do not use outdoors in direct sunlight for extended periods without shade, as UV exposure reduces polyurethane lifespan to 18 to 24 months.
Q: How often should I perform maintenance on the SU S556-XL wheel assembly?
A: Inspect wheels every 500 operating hours or every six months, whichever comes first. Rotate wheels every 1000 hours to ensure even wear. Lubricate the axle shaft with light machine oil every quarter. Check for debris or hair wrapped around the hub, which causes binding. Typical lifespan under normal warehouse conditions is 3 to 4 years before replacement becomes necessary.