NJ308
Medium cross-section cylindrical roller bearings (NJ-type) with one-direction axial restraint. Higher load capacity than NJ200 series. Same dimensions as NU300 but with semi-locating capability.
FAGNJ308-E-TVP240 × 90 × 23mm
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$95.24
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Geometry100%
40 × 90 × 23mm
Sealing100%
Open (no seal)
Load rating100%
Cr 58.5 kN / C₀r 57 kN
Speed100%
6,000 rpm (grease)
Specifications
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 90 mm |
| Width (B) | 23 mm |
| Dynamic load rating (C) | 58.5 kN |
| Static load rating (C₀) | 57 kN |
| Weight | 650 g |
| Max speed (grease) | 6,000 rpm |
| Max speed (oil) | — |
Equivalents Across Brands
| Brand | Part Number | Seal | Clearance | Status |
|---|---|---|---|---|
| FAG | NJ308-E-TVP2 | Open | CN | Probable |
| NSK | NJ308W | Open | CN | Probable |
| NTN | NJ308ET2 | Open | CN | Probable |
| SKF | NJ 308 ECP | Open | CN | Probable |
| Timken | NJ308EM | Open | CN | Probable |
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
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
Where This Bearing Is Used
Large electric motors (drive end)Heavy-duty gearboxesCompressor crankshaftsRail traction motorsMarine propulsionCrusher equipmentSteel mill equipmentIndustrial electric motors (10-50 HP)Gearboxes and speed reducersHeavy-duty pumpsConveyor systemsMachine tool spindlesAutomotive wheel hubsCentrifugal fansCompressors
RailMarineMiningSteel