Product Description
Load Wheel
Frequently Asked Questions
Q: What does -XL indicate on the SU S9109-XL part number?
A: The -XL designation indicates an extra-large or extended-load variant of the SU S9109 wheel. This version is designed to handle higher load capacities and provides superior heat dissipation through its larger finned aluminum hub. Confirm that your truck model is rated to accept SU S9109-XL before ordering, as it may have different dimensional or weight characteristics than the standard SU S9109.
Q: Is SU S9109-XL compatible with trucks that normally use SU S9109?
A: Not necessarily. SU S9109-XL may have a different OD, tread width, or hub bore than SU S9109. Check the technical specifications in your truck manual to confirm axle hub bore diameter and wheel envelope space before installation. Installing the wrong wheel size can cause rubbing, misalignment, or instability. Always verify compatibility using your truck model and serial number.
Q: What is the maximum load rating for SU S9109-XL?
A: Load rating depends on the specific truck model, the number of load wheels, and the lift height or load center distance. The larger finned hub of SU S9109-XL allows it to dissipate more heat and support higher sustained loads than standard wheels. However, you must divide your truck is rated load capacity by the number of wheels to determine the safe per-wheel limit. Consult the truck nameplate or service manual for rated capacity.
Q: Does SU S9109-XL require different maintenance than SU S9109?
A: No. Maintenance intervals are the same. If your wheel has the -Z greaseable configuration, lubricate every 250 operating hours. Sealed -2RS versions require no lubrication. Inspect bearings every 500 operating hours for play or grinding. The larger aluminum hub on SU S9109-XL typically runs cooler, which can extend bearing life if operating conditions are consistent.
Q: Can I order SU S9109-XL as a complete assembly like SU S9109-A?
A: Check the parts catalog or contact the manufacturer. SU S9109-XL may be available as a wheel component only, or it may be offered in assembly configurations with different bearing types. The -A designation typically indicates a pre-assembled version. Confirm the exact part number you need (for example, SU S9109-XL-A for a complete assembly) and verify bearing type (-Z or -2RS) before placing an order.