7311-2RS1
Heavier load capacity than 7200. Used in gearboxes, electric motors, and industrial equipment requiring axial load support.
NTN7311-2RS55 × 120 × 29mm
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$84.76
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Specifications
| Bore diameter (d) | 55 mm |
| Outer diameter (D) | 120 mm |
| Width (B) | 29 mm |
| Dynamic load rating (C) | 64.35 kN |
| Static load rating (C₀) | 33.2 kN |
| Weight | 990 g |
| Max speed (grease) | 4,760 rpm |
| Max speed (oil) | 6,375 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 | 7311-2RS | 2RS | CN | Probable |
| NSK | 7311A-2RS | 2RS | CN | Probable |
| Timken | 7311-2RS | 2RS | CN | Probable |
| FAG | 7311-B-2RS-TVP | 2RS | CN | Probable |
| SKF | 7311 BE-2RZP | 2RS | CN | Probable |
Seal Type
Rubber Sealed (2RS)
Rubber contact seals on both sides. Superior protection from contaminants. Pre-lubricated, maintenance-free.
Best forDirty, dusty, or wet environments. Applications requiring long maintenance-free operation.
Avoid forVery high-speed applications (seal friction limits top speed). Environments exceeding 110°C.
Examples
- Agricultural machinery
- Conveyor rollers
- Automotive components
- Outdoor equipment
- Washing machines
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
Angular Contact Medium Series — Common Applications
- Gearboxes
- Automotive wheel hubs
- Electric motors
- Industrial pumps
- Heavy machinery
- Compressors
- Printing presses
AutomotiveHeavy industryManufacturingPower transmission
Large (55mm 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 |
|---|---|---|
| 7311 BEP | Open (No Seal) | CN |
| 7311 BEP C3 | Open (No Seal) | C3 |
| 7311 BE-2RZP | 2RS | CN |
| 7311 BE-2RZP C3 | 2RS | C3 |