Product Description
The GW 321 is an industrial-grade nylon steer wheel assembly designed specifically for manual pallet jack applications. This durable wheel features a robust construction that ensures reliable performance in demanding environments.
Specifications: 8.000 inch diameter x 2.000 inch width (8.000" x 2.000" | 8 x 2 wheel | 8 x 2 | 203.20mm x 50.80mm) | Bearing ID: 20mm (0.787 inch bore | 20.000mm ID)
• Engineered with dual precision ball bearings for smooth operation
• Sealed bearings to protect against dust and debris
• Rated for a static capacity of 2200 lbs and dynamic capacity of 1700 lbs
This wheel assembly serves as a direct replacement for OEM assemblies, making it a reliable choice for maintaining your pallet jack's performance.
Specifications
Material
| Wheel Polymer Grade | Virgin nylon, industrial grade |
| Bearing Specification | 6204 ZZ, deep groove, sealed, steel cage |
Dimensions
| Outside Diameter | 8 inches (203.20mm) |
| Width Side to Side | 2 inches (50.80mm) |
| Bearing ID | 20mm (0.787 inch bore) |
Performance Ratings
| Static Capacity | 2200 lbs |
| Dynamic Capacity | 1700 lbs |
Part Identification
| Part Number | GW 321 |
Frequently Asked Questions
Q: What is the load capacity difference between the GW 321 static and dynamic ratings?
A: The GW 321 has a static capacity of 2200 lbs and a dynamic capacity of 1700 lbs. Static capacity applies when the jack is loaded but not moving. Dynamic capacity is the working limit during transport and operation. Do not exceed the dynamic 1700 lb limit during pallet movement to prevent bearing premature wear.
Q: Is the GW 321 compatible with jacks that use 6204 ZZ bearings?
A: Yes. The GW 321 is equipped with 6204 ZZ deep groove sealed bearings with steel cages and a 20mm bore. Before ordering, verify your existing wheel bore specification. If your current wheel has a different bearing ID (not 20mm), the GW 321 will not fit without modifying the axle.
Q: Can the GW 321 wheel assembly be repaired or do sealed bearings need full replacement?
A: The GW 321 uses factory-sealed ball bearings (ZZ designation). Sealed bearings cannot be serviced or repacked. If the bearing becomes noisy, rough, or does not spin freely, the entire wheel assembly must be replaced. Do not attempt to disassemble or lubricate sealed bearings as this voids performance and safety.
Q: What is the wheel diameter and width of the GW 321?
A: The GW 321 has an outside diameter of 8 inches (203.20mm) and a width of 2 inches (50.80mm). This 8 x 2 dimension is standard for heavy-duty manual pallet jack steer wheels. Always measure your existing wheel before ordering to confirm fitment compatibility with your jack frame.
Q: What material is the GW 321 wheel constructed from?
A: The GW 321 is manufactured from virgin nylon, industrial grade polymer. This high-quality thermoplastic provides durability, low rolling resistance, and corrosion resistance compared to rubber or metal wheels. Virgin nylon retains its properties longer than recycled alternatives in demanding warehouse environments.
Q: How do I diagnose if the GW 321 bearing is failing before replacement?
A: Failing bearing symptoms include: grinding or squeaking noise when the wheel rotates, lateral play or wobble in the wheel when hand-pushed at the rim, stiff or restricted rotation when manually spinning the axle, and uneven wear patterns on the wheel tread. If any symptom is present, replace the wheel assembly immediately. Continue use risks load drop or steering failure.