The SMF74 2rs is a deep groove ball bearing with bore 4mm, outer diameter 7mm, and width 2.5mm rated for dynamic load 0.2 kN.
| Bearing type | Deep Groove Ball Bearings |
| Series | SMF74 |
| Seal type | Sealed |
| Material | Confirmed per inquiry — grade and certificate availability reviewed before quotation |
| Bore type | Confirmed per drawing |
| Dimension unit | millimeter (mm) |
What each part of SMF74 2rs means.
| SMF | SMF = super-miniature flange |
Catalog variants open a detail page. Inquiry-only configurations go directly to RFQ.
| Seal Type | Model Code | Typical Use | |
|---|---|---|---|
| Open | SMF74 | High speed in clean environments | Quote → |
| Double metal shields | SMF74 ZZ (inquiry only) | General dust protection | Quote → |
| Double contact rubber seals | SMF74 2RS (inquiry only) | Dust and moisture protection at moderate speed | Quote → |
| Double non-contact rubber seals | SMF74 2RZ (inquiry only) | Lower-friction sealing at higher speed | Quote → |
| C3 radial clearance | SMF74 C3 (inquiry only) | Motors and applications with higher operating temperature | Quote → |
| Bore diameter (d) | 4 |
| Outer diameter (D) | 7 |
| Width (B) | 2.5 |
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 4x7x2.5 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 |
|---|---|---|---|---|
| MF74 | Different outer-ring feature | Extended Inner-Ring Flanged Bearings | Shielded | Quote → |
| MF74 2rs | Same boundary dimensions — verify fit/load | MF74 | Sealed | Quote → |
| MF74 ZZ | Same boundary dimensions — verify fit/load | MF74 | Metal Shields | Quote → |
| MF74ZZ | Same boundary dimensions — verify fit/load | MR Miniature Series | Shielded | Quote → |
| MR74 2rs | Same boundary dimensions — verify fit/load | MR | Sealed | Quote → |
| MR74 ZZ | Same boundary dimensions — verify fit/load | MR | Metal Shields | Quote → |
| MR74ZZ | Same boundary dimensions — verify fit/load | MR Miniature Series | Shielded | Quote → |
| SMF74 | Configuration variant | Extended Inner-Ring Flanged Bearings | Sealed | Quote → |
| SMF74zz | Configuration variant | SMF74 | Shielded | Quote → |
Same bearing family or similar dimensions.
Similar size — reference only, verify all interfacesNLHB 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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