Product Description
NSK 6205DDU is a single row deep groove ball bearing featuring a 25 mm bore, 52 mm outer diameter, and 15 mm width, equipped with dual nitrile rubber contact seals for protection. It is designed for radial load and is commonly specified for manual pallet jack wheel and pump assemblies, offering industry-standard fit and durability.
Specifications
Material
| Seal Material | Nitrile rubber |
| Finish | Uncoated, ground finish |
Part Numbers
| Manufacturer Part Number | 6205DDU |
| Cross-Reference Part Numbers | Equivalent to 6205-2RS, 6205LLU, 6205DDU C3, 6205 2RSH, 6205-2RS1, 6205RS, 6205DU, 6205 |
Frequently Asked Questions
Q: What are the key features of the NSK 6205DDU bearing?
A: The NSK 6205DDU is a single-row deep groove ball bearing with a 25 mm bore, 52 mm outer diameter, and 15 mm width. It features dual nitrile rubber contact seals and is designed for radial load applications in manual pallet jack wheel and pump assemblies.
Q: What are the cross-reference part numbers for the 6205DDU?
A: The 6205DDU is equivalent to 6205-2RS, 6205LLU, 6205DDU C3, 6205 2RSH, 6205-2RS1, 6205RS, 6205DU, and 6205. Verify the seal type and clearance specifications when cross-referencing, as sealed variants may have different clearance ratings.
Q: What is the seal material on the 6205DDU?
A: The 6205DDU features dual nitrile rubber contact seals (DDU designation indicates dual seals with contact against the ring races). Nitrile rubber provides resistance to oils, grease, and water contamination, making this bearing suitable for damp or wet material handling environments.
Q: Can the 6205DDU be used as a replacement for unsealed bearings?
A: Yes, the 6205DDU can replace unsealed bearings like the 6205 or 6205C3 in applications where contamination protection is needed. The sealed design prevents debris ingress and extends bearing lifespan. However, verify that the seal design does not interfere with your mounting configuration before installation.
Q: What is the typical lifespan of the 6205DDU in manual pallet jack applications?
A: The 6205DDU lifespan depends on load, speed, and maintenance. With proper greasing and protection from contamination, sealed bearings typically last 3-5 years in moderate-use manual pallet jack applications. Degraded seals or insufficient lubrication will shorten service life significantly.
Q: Does the 6205DDU require regular maintenance?
A: The sealed design of the 6205DDU reduces maintenance needs compared to open bearings. However, monitor for noise, vibration, or resistance during operation, which may indicate seal failure or internal contamination. When degradation occurs, replace the entire bearing assembly.
