Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What does the SU S631-A assembly include compared to the standard SU S631 wheel?
A: The SU S631-A is designated as a wheel assembly, which typically includes the load wheel, hub, and pre-installed bearing(s). The standard SU S631 is the wheel component only. However, the detailed specifications for what is included in the SU S631-A are not provided. Before purchase, confirm with the supplier whether the assembly includes sealed bearings, cartridge bearings, grease-lubricated bearings, or if bearing installation is required at your location. Also verify whether axle bolts, washers, retaining rings, or other fasteners are included. Do not assume two identical product names have identical component kits; always request a complete parts list.
Q: Is the SU S631-A compatible with my existing pallet jack axle without modification?
A: Compatibility depends on the axle bore diameter and the mounting method used on your equipment. The SU S631-A specifications do not include bore ID, bore OD, or width measurements. Before ordering, measure your existing wheel assembly or obtain the specifications from your equipment manual. Common bore diameters range from 1.375 inch to 2.5 inch, and mounting methods include press-fit, bolt-on, and cartridge-style bearings. If the SU S631-A bore does not match your axle diameter, it will not fit and cannot be forced onto the axle without damage. Request complete specifications from the supplier and cross-check against your equipment before purchase to avoid costly returns.
Q: What is the installation procedure for the SU S631-A assembly on an electric lift truck?
A: The installation procedure depends on the mounting design: press-fit, bolt-on, or cartridge bearing slide. If press-fit, you will need a hydraulic press to slide the assembly onto the axle shaft without damaging the bearing bore. If bolt-on, use wrenches to remove the old assembly and bolt the new one in place. If cartridge-style, the assembly slides into a hub pocket with no special tools required. The product specifications do not indicate which method applies to the SU S631-A. Consult your equipment manual or contact the jack manufacturer to confirm the correct installation method before attempting removal or installation. Improper installation will void any warranty and can damage the bearing and axle.
Q: Are the bearings in the SU S631-A sealed, and do they require re-lubrication?
A: The specifications do not state whether the SU S631-A includes sealed-for-life bearings, sealed cartridge bearings, or grease-lubricated open bearings. Sealed-for-life bearings require no maintenance. Open or grease-lubricated bearings must be re-packed every 6 to 12 months depending on duty cycle. Before installation, request the bearing type and any required maintenance schedule from the supplier. If the assembly includes grease-lubricated bearings, obtain the correct grease specification and re-lubrication schedule for your equipment. Using the wrong grease type will cause bearing failure. Most modern lift truck assemblies use sealed cartridge bearings requiring no maintenance, but always verify before assuming.
Q: How long will the SU S631-A assembly last before replacement is necessary?
A: Service life depends on the wheel compound material (not specified), duty cycle, and bearing type. A typical aftermarket load wheel assembly lasts 12 to 24 months in heavy daily warehouse use, or up to 3 to 5 years in lighter-duty applications. The wheel compound will wear and flatten first, typically requiring replacement before the bearing fails. The bearing can outlast the wheel if properly maintained. Without knowing the specific compound material and bearing type in the SU S631-A, an accurate lifespan estimate cannot be provided. Contact the supplier for expected service life under your specific operating conditions (load weight, daily hours of use, floor type). Monitor the assembly monthly and plan replacement before failure causes equipment downtime.