6304-2RS1%20C3
Higher load capacity than the 6200 series for the same bore size. Used where heavier radial loads are expected.
SKF6304-2RS1 C320 × 52 × 15mm
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Specifications
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 52 mm |
| Width (B) | 15 mm |
| Dynamic load rating (C) | 16.8 kN |
| Static load rating (C₀) | 7.8 kN |
| Weight | 139 g |
| Max speed (grease) | 19,000 rpm |
| Max speed (oil) | 30,000 rpm |
Why This Match Is Correct
✓Exact dimensional match (bore, OD, width)
✓Load ratings within tolerance
✓Seal type verified via manufacturer tables
✓Speed rating compatible
Equivalents Across Brands
| Brand | Part Number | Seal | Clearance | Status |
|---|---|---|---|---|
| SKF | 6304-2RS1 C3 | 2RS | C3 | Probable |
| FAG | 6304-2RSR-C3 | 2RS | C3 | Probable |
| NSK | 6304DDU C3E | 2RS | C3 | Verified |
| NTN | 6304LLU/C3 | 2RS | C3 | Probable |
| Timken | 6304-2RS C3 | 2RS | C3 | Probable |
Seal Type
Rubber Sealed (2RS)
Rubber contact seals on both sides. Superior protection from contaminants. Pre-lubricated, maintenance-free.
Best forDirty, dusty, or wet environments. Applications requiring long maintenance-free operation.
Avoid forVery high-speed applications (seal friction limits top speed). Environments exceeding 110°C.
Examples
- Agricultural machinery
- Conveyor rollers
- Automotive components
- Outdoor equipment
- Washing machines
Internal Clearance
Greater Than Normal (C3)
Increased radial internal clearance. Required when bearings operate at elevated temperatures or with tight shaft fits.
Best forHigh-temperature applications. Tight interference fits. Electric motors with frequent starts/stops.
Temperature70-150°C operating temperature
Where This Bearing Is Used
Medium Series — Common Applications
- Heavy-duty electric motors
- Industrial pumps
- Conveyor systems
- Mining equipment
- Construction machinery
- Agricultural equipment
- Heavy gearboxes
- Compressors
- Paper and steel mills
- Vibrating screens
Heavy industryMiningConstructionPaper & pulpSteel
Medium-Small (20mm bore) — Typical Uses
- General-purpose electric motors (1-10 HP)
- Pumps and compressors
- Automotive alternators and A/C compressors
- Conveyor rollers
- Agricultural machinery
- Washing machines
- Industrial fans
- Printing presses
Other Variants Available
Same bearing geometry — different seal and clearance configurations.
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| 6304 | Open (No Seal) | CN |
| 6304 C3 | Open (No Seal) | C3 |
| 6304-2Z | ZZ | CN |
| 6304-2Z C3 | ZZ | C3 |
| 6304-2RS1 | 2RS | CN |
| 6304-2RS1 C3 | 2RS | C3 |