Product Description
3 Diameter; Ultra-Poly; Steel
Load Wheel Assembly - 3in Diam, 3.75 in Width, 6204RS Bearing, Poly Tread
Frequently Asked Questions
Q: What manual pallet jacks use the GW L21 3-inch diameter load wheel?
A: The GW L21 is a 3-inch diameter, 3.75-inch width load wheel assembly with ultra-poly compound and a steel hub. It is designed for compact or narrower manual pallet jack frames, particularly models with restricted mounting space or smaller platform footprints. GW L21 is the correct replacement where specified by the OEM. Verify your jack documentation; do not assume compatibility based on similar appearance to larger rollers.
Q: What is the difference between GW L21 and GW L22 rollers?
A: The GW L21 is 3 inches in diameter and 3.75 inches wide with ultra-poly material. The GW L22 is smaller at 2.75 inches diameter but the same 3.75-inch width, and features a molded polyurethane construction with a formed steel bracket for tip jack installations. GW L21 is typically used on load wheel assemblies beneath the platform. GW L22 is designed for front or rear tip jacks. These are not interchangeable. Install the correct assembly for your jack configuration.
Q: Does the GW L21 come with bearings installed?
A: Yes. The GW L21 assembly includes a 6204RS sealed ball bearing pre-installed in the steel hub. The bearing is factory-pressed and sealed, so you do not need to purchase or install it separately. The bearing provides smooth rotation and is maintenance-free under normal use. Do not attempt to remove or clean the bearing; replace the entire assembly if bearing failure is suspected.
Q: What symptoms indicate the GW L21 needs replacement?
A: Replace the GW L21 if the ultra-poly tread shows deep cracks, chunks of material missing, or severe flat spots. If the roller makes grinding, squeaking, or rattling noises, the bearing or hub is likely damaged. If the jack is difficult to push, tends to drift sideways, or the load sits uneven on the platform, inspect all load rollers for wear. Wheels that do not spin freely by hand or appear loose in the mounting bracket should be replaced immediately.
Q: How is the GW L21 installed and what fasteners are required?
A: Remove the fasteners securing the old roller assembly to the jack frame, typically bolts or rivets depending on the jack design. Slide out the old assembly and inspect the mounting bracket for damage. Align the new GW L21 hub with the bracket holes and install using the same fastener type and size. For bolted installations, use a wrench or socket to tighten firmly but do not over-tighten, which binds the roller. Verify the roller spins freely before using the jack. Check all load rollers are installed and aligned for balanced performance.
Q: Is regular maintenance required for the GW L21?
A: Minimal maintenance is needed. Visually inspect the tread monthly for wear or damage. Clean the ultra-poly surface with a damp cloth to remove dirt and debris, which improves rolling performance. The sealed bearing requires no lubrication. In dusty or wet environments, dry the roller after exposure to prevent corrosion of the steel hub. The GW L21 typically lasts 12-24 months under normal warehouse use. Replace as a complete assembly if performance degrades or visible wear appears.