Product Description
Load Roller Assembly, Black UL
Load Wheel Assembly - 3in Diam, 3.75 in Width, 6204LL Bearing, Poly Tread
Frequently Asked Questions
Q: Is the GW L12 load wheel compatible with all manual pallet jack models?
A: GW L12 is specifically designed for pallet jacks that require a black UL polyurethane load wheel with a 6204LL bearing. This bearing type is less common than 6204RS; verify your jack model before ordering. GW L12 fits 16 mm straight axles and is 3 inch diameter by 3.75 inch width. Check your parts manual to confirm the bearing designation is 6204LL, not 6204RS, 6205, or other types. Installing the wrong bearing type can cause mounting issues or premature wear.
Q: What does the UL certification on GW L12 mean, and where is it used?
A: UL certification indicates the GW L12 wheel meets Underwriters Laboratories safety and material standards. UL-certified wheels are required for pallet jacks used in food handling, pharmaceutical, cleanroom, and regulated manufacturing environments. The black polyurethane tread is colored to meet cleanroom visibility and contamination control standards. If your facility operates under FDA, GMP, or ISO 14644 cleanroom compliance, verify that your current wheels are UL-certified before replacement. Standard gray polyurethane wheels are not acceptable as replacements for UL-certified GW L12 in these applications.
Q: How do I diagnose bearing failure in a GW L12 wheel?
A: A failing 6204LL bearing in the GW L12 wheel produces high-pitched squealing or grinding noise when the jack is lowered. Spin the wheel by hand after lifting the fork clear; rough spots, grinding, or jerky rotation indicate bearing degradation. The wheel may also develop side-to-side play if the bearing is severely worn. Do not continue operating a jack with a failed GW L12 bearing; the bearing cannot be replaced individually because it is sealed inside the wheel hub. Remove the entire GW L12 assembly and install a new one.
Q: What is the correct replacement procedure for GW L12 wheels?
A: Lower the jack fully onto a level surface. Lift the fork clear of the floor to unload the wheels. Remove the cotter pin securing the axle nut on the GW L12 wheel. Loosen and remove the nut with an appropriate wrench. Slide the worn GW L12 wheel off the 16 mm axle. Clean the axle shaft and inspect for wear or corrosion; replace the axle if scored. Slide the new GW L12 onto the axle, ensuring the wheel seats completely. Install the washer and hand-tighten the nut, then use a wrench to tighten snug without over-torque. Install a new cotter pin and bend the prongs to prevent loosening. Test hand-spin rotation to verify smooth operation.
Q: How should GW L12 black polyurethane wheels be cleaned for cleanroom compliance?
A: Wipe the GW L12 tread weekly with a lint-free cloth dampened with deionized water or approved cleanroom disinfectant. Do not use high-pressure washdown or harsh solvents; these can degrade the polyurethane and compromise the UL finish. Allow the wheel to air dry completely before operating the jack. Inspect for residue buildup, which reduces grip and violates cleanroom standards. Store spare GW L12 wheels in sealed, clean containers away from direct sunlight to preserve the black polyurethane color and UL properties. Do not allow dust or particles to accumulate on inventory wheels before installation.
