30310 J2/Q C3
Medium series tapered roller bearings with higher load capacity than 302xx for the same bore size. Used where heavier loads demand a more robust bearing cross-section.
FAG30310-XL C3
Pricing not yet available for this part.
Not ready to buy? Save this part →
Specifications
| Bore diameter (d) | 50 mm |
| Outer diameter (D) | 110 mm |
| Width (B) | 29.25 mm |
| Dynamic load rating (C) | 74.2 kN |
| Static load rating (C₀) | 46.8 kN |
| Weight | 869 g |
| Max speed (grease) | 3,780 rpm |
| Max speed (oil) | 5,100 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 | 30310-XL C3 | Open | C3 | Verified |
| NSK | HR30310J C3 | Open | C3 | Verified |
| NTN | 4T-30310 C3 | Open | C3 | Verified |
| SKF | 30310 J2/Q C3 | Open | C3 | Current |
| Timken | 30310 C3 | Open | C3 | 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
Greater Than Normal (C3)
Increased radial internal clearance. Required when bearings operate at elevated temperatures or with tight shaft fits.
Best forHigh-temperature applications. Tight interference fits. Electric motors with frequent starts/stops.
Temperature70-150°C operating temperature
Where This Bearing Is Used
Tapered Roller — Medium, Narrow — Common Applications
- Heavy-duty wheel hubs (trucks, trailers)
- Industrial gearboxes
- Crane and hoist equipment
- Mining conveyors
- Paper mill equipment
- Large pumps and compressors
- Rolling mill equipment
TruckingMiningPaper & pulpHeavy industry
Large (50mm bore) — Typical Uses
- Large electric motors (50+ HP)
- Industrial gearboxes
- Heavy-duty conveyor systems
- Mining and construction equipment
- Paper mill machinery
- Steel rolling mills
- Large compressors
- Wind turbine components
Other Variants Available
Same bearing geometry — different seal and clearance configurations.
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| 30310 J2/Q | Open (No Seal) | CN |