7311K
Heavier load capacity than 7200. Used in gearboxes, electric motors, and industrial equipment requiring axial load support.
SKF30311 J2/Q55 × 120 × 25mm
In stock
$89.93
Partmatch price
- Ships from EU warehouse
- Ships within 2–3 business days
- Order 5+ for 5% off · 10+ for 10% off
Secure checkout
Verified supplier
30-day returns
VisaMastercardAmex
Match Details
The specifications and details for why this match is correct.
Specifications
| Bore diameter (d) | 55 mm |
| Outer diameter (D) | 120 mm |
| Width (B) | 25 mm |
| Dynamic load rating (C) | 68.5 kN |
| Static load rating (C₀) | 43 kN |
| Weight | 890 g |
| Max speed (grease) | 3,360 rpm |
| Max speed (oil) | 6,375 rpm |
Get a PDF spec sheet
Save, print, or forward to procurement. We'll email it to you and download immediately.
Cross-References
Every way this part is identified across brands and catalogs.
Tier-1 Brand Equivalents
| Brand | Part Number | Seal | Clearance | Status |
|---|---|---|---|---|
| SKF | 30311 J2/Q | Open | CN | Probable |
| NTN | 4T-30311 | Open | CN | Probable |
| Timken | 30311 | Open | CN | Probable |
| FAG | 30311-XL | Open | CN | Probable |
| NSK | HR30311J | Open | CN | Probable |
Technical Details & Applications
Specification variations and common equipment types.
Internal Clearance
Normal Clearance (CN)
Standard radial internal clearance. Suitable for most applications under normal operating conditions.
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.
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
Electric motorsPumps and compressorsConveyor rollersAgricultural machineryFans and blowersGearboxesPower transmission equipmentWashing machinesPrinting pressesHVACAutomotive alternators and A/C compressors
Alternative Parts
Options if this exact part isn't what you need.
Same Geometry, Different Configuration
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| 7311 BEP | Open (No Seal) | CN |
| 7311 BEP C3 | Open (No Seal) | C3 |
| 7311 BE-2RZP | 2RS | CN |
| 7311 BE-2RZP C3 | 2RS | C3 |
Related Bearings
Adjacent sizes and cross-series bearings from our catalog.