51203MG
Double direction thrust ball bearings for axial loads in both directions. Used where bidirectional axial loads must be supported.
SKF5120317 × 34 × 15mm
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$8.58
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Specifications
| Bore diameter (d) | 17 mm |
| Outer diameter (D) | 34 mm |
| Width (B) | 15 mm |
| Dynamic load rating (C) | 6.1 kN |
| Static load rating (C₀) | 14.7 kN |
| Weight | 34 g |
| Max speed (grease) | 6,375 rpm |
| Max speed (oil) | 8,075 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 spindles (bidirectional)Hydraulic cylindersVertical shaft assembliesPrecision positioning equipmentScrew drivesHeavy machinery pivotsIndustrial gearboxesSmall electric motors (fractional HP)Fans and blowersPower tools (drills, grinders)Office equipment (printers, copiers)Household appliancesSkateboards and roller skatesRC vehicles and hobby motors
Machine toolsHydraulicsHeavy industryPrecision engineering
Other Variants Available
Same bearing geometry — different seal and clearance configurations.
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| 51203 | Open (No Seal) | CN |