6334
Higher load capacity than the 6200 series for the same bore size. Used where heavier radial loads are expected.
SKF630420 × 52 × 15mm
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Specifications
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 52 mm |
| Width (B) | 15 mm |
| Dynamic load rating (C) | 16.8 kN |
| Static load rating (C₀) | 7.8 kN |
| Weight | 139 g |
| Max speed (grease) | 19,000 rpm |
| Max speed (oil) | — |
Equivalents Across Brands
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 Series — Common Applications
- Heavy-duty electric motors
- Industrial pumps
- Conveyor systems
- Mining equipment
- Construction machinery
- Agricultural equipment
- Heavy gearboxes
- Compressors
- Paper and steel mills
- Vibrating screens
Heavy industryMiningConstructionPaper & pulpSteel
Medium-Small (20mm bore) — Typical Uses
- General-purpose electric motors (1-10 HP)
- Pumps and compressors
- Automotive alternators and A/C compressors
- Conveyor rollers
- Agricultural machinery
- Washing machines
- Industrial fans
- Printing presses