NJ311ECP
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.
FAGNJ311-E-TVP255 × 120 × 29mm
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$179.96
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Geometry100%
55 × 120 × 29mm
Sealing100%
Open (no seal)
Load rating100%
Cr 111 kN / C₀r 111 kN
Speed100%
4,300 rpm (grease)
Specifications
| Bore diameter (d) | 55 mm |
| Outer diameter (D) | 120 mm |
| Width (B) | 29 mm |
| Dynamic load rating (C) | 111 kN |
| Static load rating (C₀) | 111 kN |
| Weight | 1440 g |
| Max speed (grease) | 4,300 rpm |
| Max speed (oil) | — |
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 | NJ311-E-TVP2 | Open | CN | Verified |
| NSK | NJ311W | Open | CN | Verified |
| NTN | NJ311ET2 | Open | CN | Verified |
| SKF | NJ 311 ECP | Open | CN | Verified |
| Timken | NJ311EM | Open | CN | Verified |
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 equipmentLarge electric motors (50+ HP)Industrial gearboxesHeavy-duty conveyor systemsMining and construction equipmentPaper mill machinerySteel rolling millsLarge compressorsWind turbine components
RailMarineMiningSteel