Product Description
The GW 9139-A Poly Load Wheel is engineered for heavy-duty industrial applications, featuring a robust 95A polyurethane tread and integral ball bearings. This load wheel is designed to provide exceptional durability and smooth performance, making it ideal for use on warehouse floors and with electric lift trucks.
Specifications: 3.250 inch diameter x 4.500 inch width (3.250" x 4.500" | 3.25 x 4.5 wheel | 3-1/4 x 4-1/2 | 82.55mm x 114.30mm) | Bearing ID: 30mm (1.181 inch bore | 30.000mm ID)
• Made with high-quality 95A polyurethane for enhanced wear resistance
• Integral ball bearings for smooth rolling and reduced friction
• Suitable for Crown GPW electric pallet jack and other select electric lift trucks
This load wheel is perfect for heavy-duty tasks, ensuring reliable performance in demanding environments.
Specifications
Part Numbers
| Manufacturer Part Number | GW 9139-A |
| OEM Part Number | GW 9139 |
Wheel Dimensions
| Outside Diameter | 3.25 |
| Width Side to Side | 4.5 |
Frequently Asked Questions
Q: What is GW 9139-A used for?
A: GW 9139-A is a polyurethane load wheel for Crown GPW Series electric pallet jacks. It handles the rolling load on warehouse floors, driveways, and dock areas. Integral ball bearings enable smooth, low-resistance operation under heavy-duty cycles.
Q: Does GW 9139-A include bearings?
A: Yes. GW 9139-A features integral ball bearings press-fit into the wheel bore. The bearings are pre-sealed and ready to install on your axle. Do not disassemble or attempt to replace bearings; order a replacement wheel assembly instead.
Q: Can GW 9139-A be used outdoors in wet conditions?
A: Yes. Polyurethane with 95-A Shore durometer resists water, oils, and mild chemicals. Wet conditions reduce traction and may cause slipping on smooth floors. Rinse wheels with clean water after exposure to salt or corrosive materials. Sealed bearings prevent water ingress but do not guarantee bearing life extension in constant wet environments.
Q: How do I measure if GW 9139-A fits my jack?
A: Remove the existing wheel. Measure the axle bore ID (should be 30mm or 1.181 inch). Measure the wheel pocket width (should accept 4.500 inch width). Confirm outer diameter is 3.250 inch. If all three match, GW 9139-A will fit. If bore is 25mm, you need a different part.
Q: What happens if I install GW 9139-A on the wrong bore size?
A: Mismatched bore will cause the wheel to wobble, bind, or slip on the axle. This creates unsafe rolling conditions, uneven wear, and rapid bearing failure. The wheel may separate during operation, creating a serious hazard. Always verify axle bore before installation.
Q: How do I maintain GW 9139-A bearings?
A: Sealed bearings are maintenance-free; do not apply grease or oil. Inspect quarterly for debris or damage. If the wheel becomes difficult to spin or makes grinding noise, the bearing is failing and the wheel must be replaced. Bearing replacement alone is not practical; order a new GW 9139-A assembly.