Product Description
SU S663-XL Load Wheel by Liftsplus.com is an electric lift truck part designed as a load wheel assembly for compatible models. No cross-reference part numbers are available based on the current technical data. Reformulated specifications ensure accuracy for technical review.
Specifications
Part Numbers
| Manufacturer Part Number | SU S663-XL |
| OEM Part Number | SU S663-XL |
Frequently Asked Questions
Q: What load capacity does the SU S663-XL load wheel support?
A: The SU S663-XL is engineered for extended-duty applications with larger bearing surfaces than the standard S663-A. Load capacity depends on the truck frame and axle rating, not the wheel alone. Consult your truck manual or contact the manufacturer to confirm the maximum safe load for your specific model. Do not exceed the truck nameplate capacity regardless of wheel size.
Q: Is the SU S663-XL compatible with all electric lift truck models?
A: No. The SU S663-XL is designed for specific models that require extended-duty wheels. Installing an XL wheel on a truck specified for standard S663-A may cause steering issues, increased bearing wear, or suspension damage. Always verify your truck model and serial number against the application guide before ordering.
Q: How often should I replace the SU S663-XL in heavy-use environments?
A: In heavy industrial use, inspect every 500 hours of operation and replace when wear reaches 25 percent of original tread depth or if flat spots develop. In normal warehouse use, expect 1500 to 2500 hours of service before replacement. Track maintenance records to establish your replacement interval based on your operational profile.
Q: What causes premature failure of SU S663-XL wheels?
A: Overloading, driving over sharp edges or debris, inadequate bearing lubrication, and operating on floors with extreme temperature swings accelerate wear. Verify that the truck bearing is properly sealed and that the wheel bore is clean before installation. Inspect the steering linkage for damage; misalignment causes uneven wear and shortens wheel life significantly.
Q: Can I mix SU S663-XL wheels with standard S663-A wheels on the same truck?
A: No. Mixing wheel types creates uneven load distribution, handling problems, and accelerated bearing wear. Replace all wheels that support the same load as a set. If you have S663-A on front and S663-XL on rear, the truck may track unevenly and cause safety hazards.
Q: What is the bore size and shaft compatibility for SU S663-XL?
A: The SU S663-XL has an extended hub design with larger bearing surfaces compared to S663-A. Bore diameter and shaft specifications vary by application. Measure your existing wheel bore and shaft size before ordering. Contact technical support with your truck model number and serial range to confirm exact bore and shaft compatibility.