The SF6903 is a deep groove ball bearing with bore 17mm, outer diameter 30mm, and width 7mm rated for dynamic load 4.1 kN.
| Bearing type | Deep Groove Ball Bearings |
| Series | F6903 |
| Seal type | Open |
| Material | Confirmed per inquiry — grade and certificate availability reviewed before quotation |
| Bore type | Confirmed per drawing |
| Dimension unit | millimeter (mm) |
Catalog variants open a detail page. Inquiry-only configurations go directly to RFQ.
| Seal Type | Model Code | Typical Use | |
|---|---|---|---|
| Double metal shields | SF6903ZZ | General dust protection | Quote → |
| Double contact rubber seals | SF6903 2RS (inquiry only) | Dust and moisture protection at moderate speed | Quote → |
| Double non-contact rubber seals | SF6903 2RZ (inquiry only) | Lower-friction sealing at higher speed | Quote → |
| C3 radial clearance | SF6903 C3 (inquiry only) | Motors and applications with higher operating temperature | Quote → |
| Bore diameter (d) | 17 |
| Outer diameter (D) | 30 |
| Width (B) | 7 |
Corner radius, shoulder dimensions, fits and tolerances are confirmed against the requested suffix and application drawing before quotation.
Drawings and 3D models are provided per inquiry. Tell us your application and we will send the appropriate file format (DXF, DWG, STEP, IGES).
Lubrication method and application speed limit are confirmed per inquiry; no oil-speed value is derived from this number.
The models below share the 17x30x7 mm boundary dimensions. Matching d/D/B alone does not prove interchangeability; verify seals, clearance, ring features, load ratings, fits, and application conditions before replacement.
| Model | Relationship | Series | Seal | Action |
|---|---|---|---|---|
| 6903 | Same boundary dimensions — verify fit/load | 6700 / 6800 / 6900 Thin-Section Series | Open | Quote → |
| 6903 2RS | Same boundary dimensions — verify fit/load | 6700 / 6800 / 6900 Thin-Section Series | Rubber Seals | Quote → |
| 6903 2RZ | Same boundary dimensions — verify fit/load | 6700 / 6800 / 6900 Thin-Section Series | Rubber Seals | Quote → |
| 6903 ZZ | Same boundary dimensions — verify fit/load | 6700 / 6800 / 6900 Thin-Section Series | Metal Shields | Quote → |
| F6903 | Different outer-ring feature | Standard Flanged Bearings | Shielded | Quote → |
| F6903 ZZ | Different outer-ring feature | F6903 | Metal Shields | Quote → |
| F6903ZZ | Different outer-ring feature | F6903 | Shielded | Quote → |
| H71903AC | Same boundary dimensions — verify fit/load | H Series | Open | Quote → |
| H71903AC/HQ1 | Same boundary dimensions — verify fit/load | H Series | Open | Quote → |
| H71903C | Same boundary dimensions — verify fit/load | H Series | Open | Quote → |
| H71903C/HQ1 | Same boundary dimensions — verify fit/load | H Series | Open | Quote → |
| N6903 | Different outer-ring feature | Deep Groove Bearings with Snap-Ring Groove | Open | Quote → |
| N6903 2RS | Different outer-ring feature | Deep Groove Bearings with Snap-Ring Groove | Rubber Seals | Quote → |
| N6903 2RZ | Different outer-ring feature | Deep Groove Bearings with Snap-Ring Groove | Rubber Seals | Quote → |
| N6903 ZZ | Different outer-ring feature | Deep Groove Bearings with Snap-Ring Groove | Metal Shields | Quote → |
| SF6903ZZ | Configuration variant | F6903 | Shielded | Quote → |
NLHB supports both in-house manufacturing and qualified partner sourcing. We confirm the specification, supply route, inspection requirements, and available documentation before quotation.
About NLHB →Send us your quantity, application and target lead time. We confirm spec, interchange and realistic delivery — no order confirmed until you approve.
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