Product Description
SU 487-XL-A Load Wheel Assembly by Superior features a 5.00 inch nominal diameter, Cushothane XL polyurethane tread at 97A durometer, and an advanced aluminum heat sink hub engineered for high load capacity and extended service life on electric lift trucks. Lighter and cooler running than steel, it is supplied with pre-pressed, greaseable or non-greasable bearings.
Specifications: 8.000 inch diameter x 2.500 inch width (8.000" x 2.500" | 8 x 2.5 wheel | 8 x 2-1/2 | 203.20mm x 63.50mm)
Specifications
Material & Construction
| Tread Hardness | 97A Shore durometer |
| Bonding Method | XL3 chemical bond system, no bond separation guarantee |
| Hub Finish | Clear anodized aluminum for corrosion protection |
Mechanical Specifications
| Bearing Configuration | Available with greasable (single-shield) or non-greasable (2-seal, 2RS) pre-pressed bearing |
| Feature | 70% lighter than solid steel wheel assemblies |
Part Numbers & Compatibility
| Manufacturer Part Number | SU487-XL-A |
Wheel Dimensions
| Material | Cushothane |
| Outside Diameter | 8 |
| Inside Diameter | 1.938 |
| Width Side to Side | 2.5 |
| Bore Depth | 0.785 |
| Hub Width | 2.5 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What is the advantage of the aluminum hub on the SU 487-XL-A versus a steel hub?
A: The SU 487-XL-A aluminum heat sink hub runs cooler and lighter than steel-core wheels, reducing steering friction and extending bearing life by 20-30%. Aluminum dissipates heat faster, which is critical for high-cycle operations like busy warehouse environments. The trade-off is that aluminum hubs cannot support loads exceeding 4500 lbs per wheel. For heavier-duty applications above 5000 lbs per wheel, use SU 487-XL with cast iron core instead.
Q: Can I choose between greaseable and non-greaseable bearings on the SU 487-XL-A?
A: Yes. The SU 487-XL-A is available with either greaseable single-shield bearings or sealed 2RS (double-seal) non-greaseable bearings, both pre-pressed into the aluminum hub. Greaseable bearings require maintenance every 500 operating hours and suit applications with regular servicing. Sealed 2RS bearings are maintenance-free and recommended for continuous or unmanned operation, though replacement is necessary if bearing failure occurs. Specify your preference when ordering.
Q: What tread hardness does the SU 487-XL-A polyurethane provide?
A: The SU 487-XL-A tread is formulated to 97A Shore durometer hardness, which provides balanced grip and floor protection. This hardness resists chunking and tearing on concrete while remaining soft enough to prevent floor marking on vinyl and tile. The XL3 chemical bond system ensures the tread remains permanently bonded to the aluminum hub even under thermal stress from repeated acceleration and braking cycles.
Q: How do I install the SU 487-XL-A on my steering axle?
A: Press the SU 487-XL-A onto your steering or load wheel axle using a hydraulic bearing press or dedicated wheel press tool. The 1.938 inch inside diameter must align with your 1.938 inch axle diameter. Press straight and apply steady pressure until the hub seats completely against the axle shoulder. Do not use impact tools or drop the wheel, as this damages the aluminum hub and bearing seals. Verify wheel is centered before tightening any retaining nuts.
Q: What is the service life of greaseable versus sealed bearings in the SU 487-XL-A?
A: Greaseable single-shield bearings in the SU 487-XL-A typically last 1500-2500 operating hours with proper 500-hour greasing intervals. Sealed 2RS bearings last 2000-3500 operating hours without maintenance because they retain factory lubrication longer. Both bearing types fail similarly once seals are compromised. If bearing play develops (excessive wheel wobble or grinding noise), replace the entire wheel assembly rather than attempting to repack or press new bearings into the aluminum hub.