Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What is the difference between SU S663-A and SU S663-XL load wheels?
A: SU S663-A is a standard load wheel assembly for most electric lift trucks. SU S663-XL is an extended version with increased load capacity and larger bearing surfaces. Use SU S663-A for standard duty applications and SU S663-XL when your truck specifications require the XL variant. Check your truck model documentation to confirm which version is correct.
Q: How do I know if my SU S663-A load wheel needs replacement?
A: Replace the wheel if you notice flat spots, sidewall cracks, uneven wear, or excessive wobbling during operation. If the truck pulls to one side or vibrates at normal speeds, the wheel has likely lost its round or the bearing is damaged. Remove the wheel and spin it by hand; a binding feel or grinding noise indicates bearing failure.
Q: Is SU S663-A a plug-and-play replacement?
A: Yes, SU S663-A is plug-and-play in most cases. Verify that the bore size and shaft diameter match your existing wheel. Use a wheel puller to remove the old wheel and slide the new assembly onto the shaft. Ensure the retaining clip or nut is properly secured and torqued per your truck manual.
Q: What maintenance does the SU S663-A load wheel require?
A: Inspect the wheel monthly for debris, cracks, or contamination. Keep the bore area clean to prevent dirt from entering the bearing assembly. Rotate the wheel by hand quarterly to ensure smooth operation. If the bearing shows signs of drying, consult your truck manual for re-lubrication intervals and approved grease types.
Q: Can I use SU S663-A on a truck that originally shipped with a different brand wheel?
A: Yes, if the bore diameter, shaft height, and tread profile match your existing wheel and your truck manual approves cross-brand components. Measure the bore size and compare load ratings. Some manufacturers specify OEM wheels only, so verify your truck documentation before installation.