Product Description
GW 320 is a high-performance nylon steer wheel assembly designed specifically for manual pallet jacks. This durable assembly features a one-piece cast nylon wheel with pre-installed precision sealed ball bearings, ensuring smooth and maintenance-free operation. It is suitable for pallet trucks with a load capacity of up to 5500 lbs.
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)
• One-piece cast nylon construction for enhanced durability
• Pre-installed precision sealed ball bearings for smooth operation
• Chemical resistance for longevity in various environments
The GW 320 assembly is engineered to fit common manual pallet jack steer axles, making it an ideal replacement part for your equipment.
Specifications
Material
| Wheel Material | Industrial-grade cast nylon |
| Bearing Material | Chrome steel (AISI 52100) bearing races |
| Hub Material | Nylon with integrated bearing seat |
Part Numbers
| OEM Part Number | GW 320 |
| Manufacturer Part Number | GW 320 |
Wheel Dimensions
| Outside Diameter | 8 |
| Width Side to Side | 2 |
Frequently Asked Questions
Q: What is the load capacity of the GW 320, and is it suitable for heavy-duty pallet jacks?
A: The GW 320 is rated for pallet trucks with a load capacity up to 5500 lbs, making it ideal for heavy-duty material handling applications. It features industrial-grade cast nylon with chrome steel (AISI 52100) bearing races and pre-installed precision sealed ball bearings. This is the highest-capacity model in this product line. For pallet jacks rated below 2200 lbs, lower-cost alternatives such as the GW 317 or GW 319 are appropriate.
Q: What is the bearing ID for the GW 320, and will it fit my pallet jack axle?
A: The GW 320 has a 20mm bearing ID (0.787 inch bore). This is a standard bore size compatible with most manual pallet jacks rated above 3000 lbs. Before purchasing, verify your axle shaft is exactly 20mm. Measure with calipers or contact your equipment manufacturer. If your equipment uses a 16mm, 18mm, or 25mm bore, the GW 320 will not fit without modifications such as axle replacement.
Q: What makes the GW 320 different from the GW 318, and which should I choose?
A: The GW 320 is 8 x 2 inches with cast nylon and rated for 5500 lbs capacity. The GW 318 is also 8 x 2 inches but uses glass-filled nylon and is rated for moderate duty. The GW 320 is designed for sustained heavy loads and high-frequency use in industrial warehouses. If your pallet truck is rated for 5000 to 5500 lbs, the GW 320 is required. For lower-capacity equipment, the GW 318 provides adequate performance at lower cost.
Q: What does the one-piece cast nylon design provide compared to injection-molded wheels?
A: Cast nylon provides superior strength, reduced deflection under load, and extended service life compared to injection-molded designs. The one-piece cast construction eliminates potential stress points at seams or interfaces. Chrome steel bearing races provide maximum durability and load-carrying capability. This design is necessary for heavy-duty applications where sustained loads exceed 3000 lbs. One-piece construction also improves bearing alignment, reducing binding and wear.
Q: How do I install the GW 320, and what tools are required?
A: Install the GW 320 using a wrench or socket set matching your axle fasteners (typically 1/2 inch or M12). Lift the pallet jack safely and remove fasteners from the old wheel. Slide the old wheel off the 20mm axle shaft. Clean the shaft thoroughly with a wire brush. Position the GW 320 onto the shaft, ensuring it seats fully. Reinstall and tighten fasteners evenly in a criss-cross pattern. Do not over-tighten, as excessive force can damage the nylon hub or crack the wheel. Test rotation by hand before use.
Q: What maintenance is required for the GW 320, and what is the expected service life?
A: The GW 320 has sealed ball bearings requiring no lubrication. Inspect monthly for visible cracks, deformation, or uneven wear. Check that the wheel rotates smoothly and does not wobble when spun by hand. Expected service life is 4 to 7 years under continuous heavy-duty use. If bearing rotation becomes rough or noisy, or if nylon wear exceeds 1/4 inch, replace the assembly. Chrome steel bearing races provide extended life but cannot be serviced separately; replace the entire wheel assembly if bearing failure occurs.