NJ309W
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.
FAGNJ309-E-TVP245 × 100 × 25mm
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$104.30
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Specifications
| Bore diameter (d) | 45 mm |
| Outer diameter (D) | 100 mm |
| Width (B) | 25 mm |
| Dynamic load rating (C) | 74 kN |
| Static load rating (C₀) | 71 kN |
| Weight | 856 g |
| Max speed (grease) | 5,300 rpm |
| Max speed (oil) | 7,000 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 |
|---|---|---|---|---|
| FAG | NJ309-E-TVP2 | Open | CN | Verified |
| NSK | NJ309W | Open | CN | Current |
| NTN | NJ309ET2 | Open | CN | Verified |
| SKF | NJ 309 ECP | Open | CN | Verified |
| Timken | NJ309EM | Open | CN | Verified |
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
Cylindrical Roller — Medium Series (NJ) — Common Applications
- Large electric motors (drive end)
- Heavy-duty gearboxes
- Compressor crankshafts
- Rail traction motors
- Marine propulsion
- Crusher equipment
- Steel mill equipment
RailMarineMiningSteel
Medium (45mm 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 |
|---|---|---|
| NJ 309 ECP | Open (No Seal) | CN |
| NJ 309 ECP/C3 | Open (No Seal) | C3 |