Product Description
5 X 2 POLY LOAD WHEEL ASSY
Specifications: 5.000 inch diameter x 2.000 inch width (5.000" x 2.000" | 5 x 2 wheel | 5 x 2 | 127.00mm x 50.80mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 5 |
| Inside Diameter | 1.938 |
| Width Side to Side | 2 |
| Tread Profile | Angle |
| Bore Depth | 0.591 |
| Hub Width | 2 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What is included in the SU S650-A wheel assembly and how does it differ from the wheel alone?
A: The SU S650-A is a complete pre-assembled unit that includes the 5 x 2 Cushothane XL wheel plus mounted bearings and hub components, ready for axle installation. The wheel-only SU S650 requires separate bearing and hub assembly. The A suffix indicates this is a bolt-on assembly, saving labor time during installation or replacement. Both products share identical wheel dimensions: 5.000 inch diameter x 2.000 inch width.
Q: Is the SU S650-A compatible with my electric truck, or do I need a different assembly?
A: Compatibility depends on your truck model, axle diameter, and bearing type. The SU S650-A features a 1.938 inch bore and 2.0467 inch bore outside diameter. Before ordering, verify your truck documentation or measure your existing axle. Some trucks use tapered roller bearings while others use sealed ball bearings; the assembly you select must match your truck configuration. Installing an incompatible bearing type causes premature failure.
Q: How do I install the SU S650-A assembly, and what tools are required?
A: Installation requires lifting the truck securely on jack stands. Remove the axle nut or retaining hardware using the appropriate wrench size for your truck. Slide the old assembly off the axle, then slide the SU S650-A assembly onto the axle until the bore seating surface is fully positioned. Reinstall and torque the axle nut to truck specifications, typically 60 to 150 foot-pounds depending on bearing type. Do not overtighten, as this causes bearing preload failure.
Q: What bearing maintenance does the SU S650-A assembly require?
A: Sealed bearing assemblies require minimal maintenance; simply inspect for noise or play during monthly checks and replace when worn. Open-bearing assemblies require periodic greasing per truck specifications, typically every 250 operating hours. Use the lubricant grade specified by your truck manufacturer; incorrect grease causes overheating and premature failure. If you hear grinding or feel lateral movement, the bearings are worn and the assembly must be replaced.
Q: Can I replace just the wheel on an SU S650-A assembly, or must I buy a complete new assembly?
A: The wheel is press-fitted onto the hub and cannot be safely separated without specialized equipment. Attempting to remove it risks bearing damage and bearing bore distortion. For most field repairs, replace the entire SU S650-A assembly as a unit. This ensures bearing integrity and eliminates misalignment risk. Hub re-use is not recommended unless your service center has proper wheel-pressing equipment and verifies bearing condition.
Q: How long does an SU S650-A assembly typically last in regular warehouse use?
A: Lifespan is typically 2000 to 4000 operating hours in standard indoor warehouse service, assuming proper maintenance and load limits are observed. Outdoor or rough-surface operation reduces this to 1000 to 2000 hours due to increased polyurethane wear and bearing stress. Overloading the truck or operating with misaligned axles dramatically shortens assembly life. Track mileage and inspect every 500 hours for premature wear signs.