Product Description
GW 621-A-DS is a high-performance polyurethane load wheel assembly designed specifically for electric lift truck applications. With a hardness rating of 95A durometer and double sealed ball bearings, this wheel ensures durability and smooth operation under heavy loads.
Specifications: 3.250 inch diameter x 4.200 inch width (3.250" x 4.200" | 3.25 x 4.2 wheel | 3-1/4 x 4.2 | 82.55mm x 106.68mm) | Bearing ID: 25mm (0.984 inch bore | 25.000mm ID)
• Made from high-quality polyurethane for enhanced wear resistance
• Features double sealed ball bearings for reduced friction and improved lifespan
• Ideal replacement for part numbers GW621-A and GP 621-A-DS
This load wheel assembly is perfect for maintaining the efficiency and performance of electric lift trucks.
Specifications
Material & Construction
| Wheel Tread Material | Polyurethane elastomer meeting 95A hardness specification |
Part Numbers
| Manufacturer Part Number | GW 621-A-DS |
| Cross-Reference Part Numbers | GW621-A, GP 621-A-DS, GP621-A-DS |
Wheel Dimensions
| Material | |
| Outside Diameter | 3.25 |
| Width Side to Side | 4.2 |
Frequently Asked Questions
Q: What does DS mean in GW 621-A-DS and when should I use it?
A: DS means double sealed. GW 621-A-DS has sealed ball bearings on both sides of the wheel hub, providing extra protection against moisture, dust, and contaminants. Use GW 621-A-DS if your truck operates in damp, wet, outdoor, or dusty environments. For dry indoor warehouses, standard GW 621-A is sufficient and more cost-effective.
Q: Is GW 621-A-DS a direct replacement for GW 621-A?
A: Yes. GW 621-A-DS has the same 3.250 inch diameter, 4.200 inch width, 25mm bearing bore, and mounting footprint as GW 621-A. Both fit generic electric lift trucks with 25mm hub bores. The only difference is double sealed bearings in GW 621-A-DS. Installation is identical and requires no modification.
Q: How do double sealed bearings extend wheel life in wet conditions?
A: Double sealed bearings have rubber or metal seals on both the inner and outer edges of the bearing race. These seals prevent water, salt spray, and moisture from entering the bearing cavity where they cause rust and lubrication breakdown. In wet dock or outdoor operations, sealed bearings can extend wheel life from 4 years to 6 to 7 years.
Q: Does GW 621-A-DS cost more than GW 621-A and is it worth it?
A: GW 621-A-DS typically costs 15 to 25 percent more than GW 621-A due to the sealed bearing design. If your truck operates in dusty, wet, or outdoor environments, the extra cost is justified by reduced maintenance downtime and longer service life. If your truck stays indoors in climate-controlled areas, standard GW 621-A offers better value.
Q: Can I replace only some GW 621-A-DS wheels on a four-wheel truck?
A: Technically yes, but it is not recommended. For balanced performance and wear, use the same wheel type on all four positions. If you replace only two wheels with GW 621-A-DS and leave two with standard GW 621-A, the truck will have uneven rolling resistance and load distribution. Replace all four wheels at the same time for consistency.