Product Description
GW 9143-A1 is a high-performance 4-inch diameter x 2.5-inch width Durarun 95A polyurethane caster wheel assembly, specifically designed for industrial electric lift trucks. This durable wheel assembly includes bearings and washers, ensuring smooth operation and reliability in demanding environments.
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: Bearing ID: 1in (25.40 mm bore | 1.000in ID)
• Constructed from hardened polyurethane for enhanced durability
• Ideal for heavy-duty applications
• Includes bearings and washers for easy installation
This caster wheel assembly is compatible with various industrial electric lift trucks, making it an essential component for efficient material handling.
Specifications
Material
| Wheel Material | Polyurethane (95A hardness) |
Part Numbers
| OEM Part Number | GW 9143-A1 |
| Cross-Reference Part Numbers | GP 9143-A1, GP9143-A1 |
Wheel Dimensions
| Outside Diameter | 4 |
| Width Side to Side | 2.5 |
Frequently Asked Questions
Q: How does GW 9143-A1 differ from GW 9143-A in bearing bore size?
A: GW 9143-A1 uses a 1.000 inch (25.40mm) bearing bore, while GW 9143-A uses a 25mm (0.984 inch) bore. This 0.016 inch difference is critical for fitment. GW 9143-A1 is designed for lift trucks with larger-diameter axles. Never attempt to force GW 9143-A1 onto a 25mm axle or GW 9143-A onto a 1 inch axle; mismatched bore sizes cause binding, bearing failure, and safety hazards. Measure your existing wheel bore before ordering.
Q: Is GW 9143-A1 equivalent to any other cross-referenced part number?
A: Yes. GW 9143-A1 is equivalent to GP 9143-A1 and GP9143-A1. All three are 4 x 2.5 inch wheels with 1.000 inch bearing bore, 95A Durarun tread, and single sealed bearing. Cross-brand installation between GW and GP versions is acceptable. However, do not confuse A1 (1 inch bore) with A-R (25mm bore) or A-DS (25mm bore with double seals); bore size mismatch prevents installation.
Q: What trucks typically use 1-inch bore wheels like GW 9143-A1?
A: Larger industrial electric lift trucks (6000-8000 pound capacity) and older models often use 1 inch axles to handle higher loads. Heavy-duty pallet jacks and walkie-rider trucks typically run 1 inch bore wheels. Modern compact lift trucks (under 4000 pounds) use 25mm bore. Check your truck nameplate or measure the axle diameter: 1.000 inch axle = GW 9143-A1, and 25mm axle = GW 9143-A. Consult your truck manual if uncertain.
Q: Does GW 9143-A1 come with bearings and washers, as stated in specifications?
A: Yes. GW 9143-A1 is supplied as a complete assembly with sealed bearings and stainless steel washers pre-installed. No additional bearing procurement is required. The assembly is ready to install directly onto a 1 inch axle. Washers are included on both sides of the bearing to prevent axle play. Do not discard washers; they are necessary for proper wheel alignment and safety.
Q: What is the maximum load capacity for GW 9143-A1?
A: GW 9143-A1 supports the full load rating of the truck, not the wheel itself. The 1 inch bore and 95A polyurethane are engineered for trucks rated 6000-8000 pounds. Divide the truck nameplate rating by four wheels to determine load per wheel. Typical 7000-pound truck means 1750 pounds per wheel. Do not exceed truck manufacturer rating. Operating speed limit is 5 mph on smooth floors; temperature range is 32-122 degrees Fahrenheit.
Q: How often should GW 9143-A1 be replaced, and what are end-of-life indicators?
A: Replace when tread wears below 0.500 inch thickness or when flat spots exceed 0.100 inch depth, typically after 24-36 months of normal use. Inspection triggers: (1) squealing noise during operation indicates bearing friction, (2) wheel wobble exceeding 0.100 inch at rim, (3) tread cracking or peeling, (4) grinding sensation during rotation. Sealed bearing failure requires assembly replacement; do not attempt individual bearing replacement. Preventive replacement at 30 months reduces unexpected downtime in heavy-use environments.