Product Description
The 6304-2RS is a sealed deep groove radial ball bearing engineered for reliable performance in pallet jack wheel assemblies and material handling equipment. Dual contact rubber seals provide excellent contamination resistance in wet and dirty environments, minimizing bearing damage from moisture and debris while reducing maintenance requirements. This direct replacement bearing delivers precision engineering and extended service life across manual and electric lift truck applications.
Specifications
Bearing Dimensions
| Bore Diameter | 20 mm |
| Outer Diameter | 52 mm |
| Width | 15 mm |
Material & Construction
| Bearing Material | High carbon chromium bearing steel (SAE 52100, GCr15, 100Cr6, or equivalent) |
| Cage Material | Pressed steel |
| Ball Material | Grade 10 chromium steel |
| Seal Material | Nitrile rubber (NBR) |
Performance Specifications
| Radial Internal Clearance | Normal (CN) per ISO 5753-1 |
| Seal Type | Contact rubber seals on both sides (2RS) |
| Limiting Speed (Grease) | 9500 RPM |
| Precision Grade | ABEC 3 |
Part Numbers & Cross-References
| Manufacturer Part Number | 6304-2RS |
| Cross-Reference Part Numbers | Equivalent to SKF 6304-2RS1, Timken 6304-2RS, Koyo 6304 2RS, ZEN 6304-2RS-NR |
| Supersedes / Replaces | Supersedes generic part number 6304, interchangeable with 6304-RS and 6304-2RS1 |
| Application | Pallet jack wheel assemblies, material handling load wheels, industrial equipment wheel hubs |
Frequently Asked Questions
Q: What are the specifications and cross-references for SKU 6304-2RS?
A: SKU 6304-2RS is a deep groove radial ball bearing with 20 mm bore, 52 mm outer diameter, and 15 mm width. It is sealed on both sides for contamination resistance. Cross-references include SKF 6304-2RS1, Timken 6304-2RS, Koyo 6304 2RS, ZEN 6304-2RS-NR, and it is interchangeable with 6304-RS and 6304-2RS1 equivalents.
Q: What material handling equipment uses the 6304-2RS bearing?
A: SKU 6304-2RS is used in pallet jack wheel assemblies, manual and electric lift truck load wheels, and general industrial equipment requiring sealed radial ball bearing support. The bearing fits wheel hub assemblies on Crown, Toyota, Raymond, Yale, Hyster, and other material handling equipment brands.
Q: What is the load capacity and clearance specification of SKU 6304-2RS?
A: SKU 6304-2RS operates with Normal (CN) radial internal clearance per ISO 5753-1 standards. The bearing supports radial and axial loads typical of material handling wheel assemblies. Verify equipment specifications and actual wheel loading conditions to ensure proper bearing selection and lifespan.
Q: How do the 2RS seals on SKU 6304-2RS affect maintenance?
A: The dual contact seals (2RS) on SKU 6304-2RS provide contamination resistance in wet or dirty environments, reducing bearing damage from moisture and debris. These seals reduce the need for frequent regreasing compared to open-bearing types. However, sealed bearings cannot be relubricated and must be replaced when worn or failed.
