6303-2ZJEM
Higher load capacity than the 6200 series for the same bore size. Used where heavier radial loads are expected.
FAG6303-2ZR-C3
Pricing not yet available for this part.
Specifications
| Bore diameter (d) | 17 mm |
| Outer diameter (D) | 47 mm |
| Width (B) | 14 mm |
| Dynamic load rating (C) | 14.3 kN |
| Static load rating (C₀) | 6.55 kN |
| Weight | 110 g |
| Max speed (grease) | 22,000 rpm |
| Max speed (oil) | 34,000 rpm |
Equivalents Across Brands
| Brand | Part Number | Seal | Clearance | Status |
|---|---|---|---|---|
| FAG | 6303-2ZR-C3 | ZZ | C3 | Probable |
| NSK | 6303ZZ C3E | ZZ | C3 | Verified |
| NTN | 6303ZZ/C3 | ZZ | C3 | Probable |
| SKF | 6303-2Z C3 | ZZ | C3 | Probable |
| Timken | 6303-ZZ C3 | ZZ | C3 | Probable |
Internal Clearance
Greater Than Normal (C3)
Increased radial internal clearance. Required when bearings operate at elevated temperatures or with tight shaft fits.
Best forHigh-temperature applications. Tight interference fits. Electric motors with frequent starts/stops.
Temperature70-150°C operating temperature
Seal Type
Metal Shielded (ZZ / 2Z)
Metal shields on both sides. Moderate protection from dust and debris. Pre-lubricated with grease.
Best forModerately clean environments. Applications where some contamination is possible but not severe.
Avoid forHarsh environments with heavy moisture, chemicals, or fine dust ingress.
Examples
- Electric motors
- Fans and blowers
- Power tools
- HVAC equipment
Where This Bearing Is Used
Heavy-duty electric motorsIndustrial pumpsConveyor systemsMining equipmentConstruction machineryAgricultural equipmentHeavy gearboxesCompressorsPaper and steel millsVibrating screensSmall electric motors (fractional HP)Fans and blowersPower tools (drills, grinders)Office equipment (printers, copiers)Household appliancesSkateboards and roller skatesRC vehicles and hobby motors
Heavy industryMiningConstructionPaper & pulpSteel
Other Variants Available
Same bearing geometry — different seal and clearance configurations.
| SKF Part Number | Seal Type | Clearance |
|---|---|---|
| 6303 | Open (No Seal) | CN |
| 6303 C3 | Open (No Seal) | C3 |
| 6303-2Z | ZZ | CN |
| 6303-2Z C3 | ZZ | C3 |
| 6303-2RS1 | 2RS | CN |
| 6303-2RS1 C3 | 2RS | C3 |