6308ZNR
Higher load capacity than the 6200 series for the same bore size. Used where heavier radial loads are expected.
SKF6308-2Z40 × 90 × 23mm
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$40.82
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Specifications
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 90 mm |
| Width (B) | 23 mm |
| Dynamic load rating (C) | 42.3 kN |
| Static load rating (C₀) | 24 kN |
| Weight | 611 g |
| Max speed (grease) | 11,000 rpm |
| Max speed (oil) | 17,000 rpm |
Equivalents Across Brands
Internal Clearance
Normal Clearance (CN)
Standard radial internal clearance. Suitable for most applications under normal operating conditions.
Best forGeneral-purpose use. Normal temperatures, standard fits, moderate speeds.
TemperatureUp to ~70°C operating temperature
Seal Type
Metal Shielded (ZZ / 2Z)
Metal shields on both sides. Moderate protection from dust and debris. Pre-lubricated with grease.
Best forModerately clean environments. Applications where some contamination is possible but not severe.
Avoid forHarsh environments with heavy moisture, chemicals, or fine dust ingress.
Examples
- Electric motors
- Fans and blowers
- Power tools
- HVAC equipment
Where This Bearing Is Used
Heavy-duty electric motorsIndustrial pumpsConveyor systemsMining equipmentConstruction machineryAgricultural equipmentHeavy gearboxesCompressorsPaper and steel millsVibrating screensIndustrial electric motors (10-50 HP)Gearboxes and speed reducersHeavy-duty pumpsMachine tool spindlesAutomotive wheel hubsCentrifugal fans
Heavy industryMiningConstructionPaper & pulpSteel
Other Variants Available
Same bearing geometry — different seal and clearance configurations.
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| 6308 | Open (No Seal) | CN |
| 6308 C3 | Open (No Seal) | C3 |
| 6308-2Z | ZZ | CN |
| 6308-2Z C3 | ZZ | C3 |
| 6308-2RS1 | 2RS | CN |
| 6308-2RS1 C3 | 2RS | C3 |