51103MG
Single direction thrust ball bearings for axial loads in one direction. Compact design with high axial load capacity relative to size.
SKF5110317 × 30 × 9mm
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$7.15
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Specifications
| Bore diameter (d) | 17 mm |
| Outer diameter (D) | 30 mm |
| Width (B) | 9 mm |
| Dynamic load rating (C) | 10.2 kN |
| Static load rating (C₀) | 24.5 kN |
| Weight | 19 g |
| Max speed (grease) | 7,500 rpm |
| Max speed (oil) | 9,500 rpm |
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
Machine tool spindlesAutomotive steering columnsScrew jacks and lead screwsRotary tablesCrane hooks and swivelsVertical pumpsTurntables and indexing tablesSmall electric motors (fractional HP)Fans and blowersPower tools (drills, grinders)Office equipment (printers, copiers)Household appliancesSkateboards and roller skatesRC vehicles and hobby motors
Machine toolsAutomotiveMaterial handlingIndustrial equipment
Other Variants Available
Same bearing geometry — different seal and clearance configurations.
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| 51103 | Open (No Seal) | CN |