Product Description
Big Joe GWK-WPT-LW-XL load wheel kit features high-durability 97A durometer polyurethane wheels, precision bearings, and steel core, engineered for electric pallet truck models WPT and WPT45. Replaces or is equivalent to GWK-WPT-LW, supports up to 4500 lbs, and delivers smooth operation and long wear in harsh industrial environments.
Compatibility: Fits pallet jacks made by Big Joe, model WPT. SKU: GWK-WPT-LW-XL
Specifications
Material & Construction
| Tread Material Specification | Industrial grade polyurethane (97A Shore hardness) |
| Wheel Core Material | Steel core with bonded polyurethane tread |
| Finish | Polyurethane tread with factory bonded finish |
Frequently Asked Questions
Q: What is the difference between GWK-WPT-LW-XL and GWK-WPT-LW?
A: GWK-WPT-LW-XL uses 97A durometer polyurethane wheels and supports up to 4,500 lbs load capacity. GWK-WPT-LW uses 95A durometer wheels and supports standard truck capacity. The XL variant is harder and lasts longer but provides less grip on slippery floors. Choose XL if your operation requires higher load capacity or extended wheel life; use standard GWK-WPT-LW for general warehouse use.
Q: Is GWK-WPT-LW-XL rated for 4,500 lbs on all Big Joe WPT models?
A: GWK-WPT-LW-XL is rated for 4,500 lbs and fits Big Joe WPT and WPT45 models. However, verify your truck nameplate capacity; older WPT models may be rated for 3,000 to 3,500 lbs maximum. Never exceed truck rated capacity. Overloading the truck chassis or mast damages hydraulics and steering, regardless of wheel strength. Check your serial number and truck documentation before upgrading.
Q: What is Shore hardness 97A and why is it better for some applications?
A: Shore hardness 97A is near the upper limit of polyurethane durometer. Higher hardness resists tread wear and cuts better than softer compound, extending wheel life by 30 to 50 percent. Trade-off is reduced grip on wet or smooth epoxy floors. Use 97A wheels in high-cycle operations, outdoor ramps, or rough-floor warehouses where durability matters more than traction.
Q: What is the wheel core material and how does it affect performance?
A: GWK-WPT-LW-XL wheels have a steel core with bonded polyurethane tread. The steel core provides rigidity to support heavy loads and resists flexing under compression. This construction is stiffer than polymer-core wheels and produces slightly more vibration on rough concrete. Steel cores do not soften under heat; they maintain load capacity in dock areas or outdoor ramps exposed to sun.
Q: Can bearing failure be detected before the wheel completely fails?
A: Yes. Listen for grinding, squeaking, or rumbling sounds as you operate the truck. Feeling for heat by carefully touching the wheel hub (after cool-down) can indicate excess friction. If a wheel is noticeably warmer than others after 30 minutes of operation, the bearing is beginning to seize. Replace the wheel assembly immediately to prevent complete failure and possible load drop.
Q: How should these wheels be stored to prevent premature aging?
A: Store GWK-WPT-LW-XL wheels indoors in a cool, dark, dry location away from direct sunlight, heat sources, and ozone-generating equipment. Polyurethane degrades under UV light and ozone, causing hardening and cracking even if not in use. Ideal storage is 50 to 75 degrees Fahrenheit at less than 65 percent humidity. Do not stack wheels; store in a rack to prevent flat spotting.