Product Description
SU S445-A load wheel assembly, engineered for electric lift trucks, features a 5-inch diameter Cushothane XL polyurethane tread (97A durometer), lightweight HeatSink aluminum hub, and multiple bearing options. Compatible with select Crown®, HYG®, and Raymond® models via cross-reference. Designed for superior longevity and reduced heat buildup compared to traditional solid steel hub wheels.
Specifications
Part Numbers
| Cross-Reference Part Numbers | Replaces SU S445; equivalent to Superior Tire V509150, V509157, V500458, V500878, V500654, V500653 |
| OEM Part Number | SU S445-A |
| Manufacturer Part Number | SU S445-A |
Frequently Asked Questions
Q: What makes the SU S445-A a complete assembly versus the SU S445 wheel alone?
A: The SU S445-A is a pre-assembled wheel assembly that includes the 5-inch diameter Cushothane XL polyurethane wheel bonded to a HeatSink aluminum hub with bearings installed. It is ready to bolt directly onto your truck spindle without additional bearing setup.
Q: Which Crown, HYG, and Raymond models is the SU S445-A compatible with?
A: The SU S445-A is engineered for select Crown, HYG, and Raymond electric lift truck models. Verify exact compatibility by checking your truck model and serial number against the cross-reference documentation or contact technical support with your truck details.
Q: What is the advantage of the HeatSink aluminum hub on the SU S445-A?
A: HeatSink aluminum dissipates heat generated during operation better than solid steel hubs, reducing bearing temperature buildup. This extends bearing life, reduces thermal damage to seals, and improves overall wheel assembly durability in high-cycle warehouse environments.
Q: Can I choose different bearing options for the SU S445-A?
A: Yes. The SU S445-A comes with multiple bearing options to match your truck design. Standard options include sealed ball bearings or taper roller bearings. Confirm your bearing requirement before ordering, as the hub bore and seal design are specific to each bearing type.
Q: What is the expected lifespan of the SU S445-A assembly?
A: With proper maintenance, the SU S445-A typically lasts 3 to 5 years in standard warehouse duty. Lifespan depends on load weight, floor surface, maintenance frequency, and bearing lubrication. Inspect wheels quarterly for tread wear and bearing play. Replace when tread depth falls below 3/8 inch or when bearings become loose or noisy.
Q: How do I install the SU S445-A assembly on my truck?
A: Slide the assembled wheel and hub onto the truck spindle until it seats fully. Secure using the spindle fastener (nut or bolt) and tighten to manufacturer torque specifications, typically 40 to 60 foot-pounds. Verify the wheel rotates freely with no side-to-side movement before operating the truck.