4T-JL69349/JL69310
NTN4T-JL69349/JL6931038.1 × 68.26 × 17.46mm
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$27.30
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Specifications
| Bore diameter (d) | 38.1 mm |
| Outer diameter (D) | 68.26 mm |
| Width (B) | 17.46 mm |
| Dynamic load rating (C) | 28.5 kN |
| Static load rating (C₀) | 16.8 kN |
| Weight | 175 g |
| Max speed (grease) | 3,000 rpm |
| Max speed (oil) | 4,500 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 |
|---|---|---|---|---|
| NTN | 4T-JL69349/JL69310 | Open | CN | Current |
| Koyo | JL69349/JL69310 | Open | CN | Equivalent |
| Timken | JL69349/JL69310 | Open | CN | Probable |
| SKF | JL69349/JL69310 | Open | CN | Equivalent |
| FAG | JL69310 | Open | CN | Probable |
| FAG | JL69349 | Open | CN | Probable |
| FAG | JL69349/JL69310 | Open | CN | Probable |
| Koyo | JL69310 | Open | CN | Equivalent |
| Koyo | JL69349 | Open | CN | Equivalent |
| NTN | JL69310 | Open | CN | Equivalent |
| NTN | JL69349 | Open | CN | Equivalent |
| SKF | JL69310 | Open | CN | Equivalent |
| SKF | JL69349 | Open | CN | Equivalent |
| Timken | JL69310 | Open | CN | Probable |
| Timken | JL69349 | Open | CN | Probable |
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
Medium (38.1mm 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 |
|---|---|---|
| JL69349/JL69310 | Open (No Seal) | CN |