307-S
SKF630735 × 80 × 21mm
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$17.16
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Specifications
| Bore diameter (d) | 35 mm |
| Outer diameter (D) | 80 mm |
| Width (B) | 21 mm |
| Dynamic load rating (C) | 35.1 kN |
| Static load rating (C₀) | 19 kN |
| Weight | 444 g |
| Max speed (grease) | 12,000 rpm |
| Max speed (oil) | — |
Equivalents Across Brands
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
Industrial electric motors (10-50 HP)Gearboxes and speed reducersHeavy-duty pumpsConveyor systemsMachine tool spindlesAutomotive wheel hubsCentrifugal fansCompressors