Deep Groove Ball Bearing - High Load Capacity
6305-2RS
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Compatibility
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Reference Diagrams
Visit our diagram page for part references to popular models
Product Description
The 6305-2RS is a precision single-row deep groove ball bearing, featuring double nitrile rubber seals for effective exclusion of contaminants and pre-lubrication for reduced maintenance. Standardized for use in manual pallet jack wheel assemblies and compatible with major bearing manufacturers’ cross-reference part numbers. High-load capacity and the metric form factor ensure drop-in replacement compatibility.
Specifications
Material & Construction
| Seal Material | Nitrile butadiene rubber with steel core |
Part Numbers
| Manufacturer Part Number | 6305-2RS |
| OEM Equivalent Part Numbers | 6305-2RS1 (SKF), 6305 2RS (Koyo), 6305DDU (NSK), 6305-2NSL (NTN) |
| Cross-Reference Part Numbers | 6305-2RS1, 6305.2RS, 6305RS, 6305DDU, 6305-2NSL |
| Replaces/Supersedes Part Numbers | 6305RS, 6305-ZZ (open/shielded variants, functionally equivalent except for sealing method) |
Performance Specifications
| Dynamic Load Rating | 28 kN (per SKF/ISO 281 reference) |
| Static Load Rating | 15.6 kN (per SKF/ISO 281 reference) |
| Limiting Speed (Grease) | 7000 RPM (reference; actual application may vary) |
Frequently Asked Questions
Q: What are the dimensions of the 6305-2RS bearing?
A: The 6305-2RS precision single row deep groove ball bearing measures 25 mm bore diameter, 62 mm outer diameter, and 17 mm width. These metric form factor dimensions ensure drop-in compatibility with manual pallet jack wheel assemblies specified for the 6305 bearing size.
Q: What do the double nitrile rubber seals provide?
A: The 2RS designation indicates double nitrile rubber seals that exclude water, dirt, and contaminants more effectively than metal shields. The seals are contact seals that run against the outer raceway, providing superior contamination protection. The bearing comes pre-lubricated at manufacture, reducing initial maintenance requirements.
Q: What are the cross-reference part numbers for the 6305-2RS?
A: The 6305-2RS has multiple manufacturer cross-references: SKF 6305-2RS1, Koyo 6305 2RS, NSK 6305DDU, and NTN 6305-2NSL. Additional interchangeable part numbers include 6305.2RS, 6305RS, and 6305-2NSL. Verify dimensions match your equipment before ordering.
Q: Is the 6305-2RS suitable for cold storage and wet floor applications?
A: Yes, the 6305-2RS with nitrile rubber seals and pre-lubrication is well-suited for cold storage and wet floor environments. The seals maintain lubrication integrity in freezer conditions and prevent moisture ingress on damp warehouse floors. This design significantly reduces maintenance intervals compared to open or shielded variants.
Q: How does the 6305-2RS compare to open and shielded 6305 variants?
A: The open 6305 requires frequent re-greasing and offers minimal contamination protection. Shielded variants (6305-Z, 6305-ZZ) provide moderate protection but still need periodic maintenance. The 6305-2RS sealed variant requires minimal maintenance, provides superior contamination exclusion, and includes factory pre-lubrication. Select 2RS for reduced maintenance in challenging environments.
