30208 J2/Q
Light series metric tapered roller bearings with narrow width. The most common tapered roller series for general-purpose applications. Handles combined radial and axial loads with high rigidity.
Timken3020840 × 80 × 19.75mm
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$28.17
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Specifications
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 80 mm |
| Width (B) | 19.75 mm |
| Dynamic load rating (C) | 34.9 kN |
| Static load rating (C₀) | 20.8 kN |
| Weight | 301 g |
| Max speed (grease) | 5,700 rpm |
| Max speed (oil) | 7,800 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
Seal Type
Open (No Seal)
No seals or shields. Allows external lubrication and cooling. Lowest friction, highest speed capability.
Best forClean environments with external lubrication systems. High-speed applications where heat dissipation matters.
Avoid forDirty, dusty, or wet environments. Applications without planned lubrication maintenance.
Examples
- Machine tool spindles
- Gearboxes with oil bath lubrication
- High-speed precision equipment
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
Where This Bearing Is Used
Tapered Roller — Light, Narrow — Common Applications
- Automotive wheel hubs
- Gearboxes and transmissions
- Machine tool spindles
- Agricultural equipment
- Differential assemblies
- Conveyor rollers
- Pumps and compressors
AutomotivePower transmissionAgricultureHeavy industry
Medium (40mm bore) — Typical Uses
- Industrial electric motors (10-50 HP)
- Gearboxes and speed reducers
- Heavy-duty pumps
- Conveyor systems
- Machine tool spindles
- Automotive wheel hubs
- Centrifugal fans
- Compressors
Other Variants Available
Same bearing geometry — different seal and clearance configurations.
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| 30208 J2/Q C3 | Open (No Seal) | C3 |