Product Description
The GW 9143-A Poly Caster Wheel is engineered for durability and efficiency in material handling applications. With a robust design, it is ideal for use with electric pallet jacks and lift trucks.
Specifications: 4.000 inch diameter x 2.500 inch width (4.000" x 2.500" | 4 x 2.5 wheel | 4 x 2-1/2 | 101.60mm x 63.50mm) | Bearing ID: 25mm (0.984 inch bore | 25.000mm ID)
• Made with 95A hardness polyurethane tread for excellent traction and wear resistance
• Features a precision-sealed bearing assembly with an extended inner race for smooth operation
• Constructed with a steel core and machined surfaces to ensure long life in demanding environments
This caster wheel is compatible with various electric pallet jacks and lift trucks, making it a versatile choice for your material handling needs.
Specifications
Material
| Tread Material | Polyurethane, Shore Hardness 95A |
| Core Material | Steel core |
| Surface Finish | Machined tread and hub surfaces |
Part Numbers
| Cross-Reference Part Numbers | Replaces GW9143-A-R, GP 9143-A-R, GP9143-A-R, GW9143-A-DS, GP 9143-A-DS, GP9143-A-DS, GW9143ASG |
| Equivalent Part Numbers | 95A Poly Caster Wheel Assembly |
| Manufacturer Part Number | GW 9143-A |
Performance
| Tread Hardness | 95 Shore A |
Wheel Dimensions
| Outside Diameter | 4 |
| Width Side to Side | 2.5 |
Frequently Asked Questions
Q: Is GW 9143-A compatible with GP branded lift trucks?
A: Yes. GW 9143-A is cross-compatible with GP 9143-A-R and GP9143-A-R equivalents. Both are 4.000 inch diameter x 2.500 inch width assemblies with 25mm bearing ID. Verify your lift truck model accepts a 25mm bore before installing. If your truck uses 1.000 inch (25.4mm) bearings, use GW 9143-A1 instead.
Q: What does 95A Shore hardness mean for this polyurethane wheel?
A: 95A Shore hardness indicates a hard, load-bearing polyurethane tread designed for smooth concrete and industrial floors. Higher hardness (95A) provides excellent wear resistance and traction but transmits more vibration than softer compounds. This wheel is optimized for electric pallet jacks and lift trucks operating 8-16 hours daily on hard surfaces. Do not use on uneven or gravel terrain.
Q: How do I diagnose if the wheel bearing is failing?
A: Listen for grinding or squealing when the jack operates under no load. Check for excessive play by lifting the truck and spinning the wheel by hand; it should rotate freely for 3-5 seconds without wobble. If rotation stops within 1 second or feels rough, the sealed bearing assembly requires replacement. Do not operate the jack if play exceeds 0.100 inch (2.5mm) at the wheel rim.
Q: Is this a plug-and-play replacement or does it require modification?
A: GW 9143-A is plug-and-play if your truck uses a 25mm bore axle. Remove the retaining clip or bolt, slide off the old wheel, and install the new assembly in reverse order. No additional tools or modifications needed. Typical installation time is 5-10 minutes per wheel. If your truck uses different bearing bore sizes, the assembly will not fit; do not force it.
Q: What is the load capacity and maximum operating conditions?
A: GW 9143-A supports the load rating of your lift truck, not the wheel itself. The 4 x 2.5 inch 95A polyurethane construction is rated for continuous duty on smooth, hard floors at speeds up to 5 mph. Load capacity depends on truck model and total wheel count. Do not exceed the truck manufacturer nameplate rating. Operating temperature range is 32-122 degrees Fahrenheit; avoid extreme heat or freezing.
Q: How often should this wheel be replaced, and what triggers replacement?
A: Replace when tread shows flat spots, cracks, or loss of traction; typically 18-36 months of heavy use. If the wheel diameter reduces below 3.875 inches due to wear, replace it immediately to maintain truck stability. Inspect bearing assembly annually; replace if sealed bearing fails or bore wear exceeds 0.050 inch. Preventive maintenance includes quarterly cleaning to remove debris from the sealed bearing.