MF126 Flanged Ball Bearing (Flange Bearing), F and MF series
For a 6 mm shaft and a 12 mm housing bore, the MF126 flanged ball bearing (F and MF series) is 3 mm wide. Modeled as simplified STEP files. Its flange is 13.2 mm across and 0.6 mm thick.

How these parts are made, and what the levels mean: read the method
- Also searched as: MF126 bearing
- Model id:
bearings-miniature-flanged-mf126
- Standard: F and MF series · size MF126
Files
| Part key | Simplified |
|---|
bearings-miniature-flanged-mf126 | STEP |
Dimensions

| Symbol | Name | min | nom | max | Modeled | Rule | Level |
|---|
| d | Bore diameter | | 6 | | 6 | nominal | L1 |
| D | Outside diameter | | 12 | | 12 | nominal | L1 |
| B | Width | | 3 | | 3 | nominal | L1 |
| r | Chamfer dimension | 0.15 | | | 0.15 | single limit (min), modeled at the limit | L1 |
| D1 | Flange diameter | | 13.2 | | 13.2 | nominal | L1 |
| C1 | Flange width | | 0.6 | | 0.6 | nominal | L1 |
Drawing

As a PDF: CC-BRG-MINI-FL-SZ-MF126.pdf.
The MF126 flanged ball bearing beside the MF106 and the F686
The MF126 is number 24 of the 39 F and MF series flanged ball bearings published here, listed from F682 to F689.
- Bore diameter (d): 6 mm on the MF126 flanged ball bearing, the same on the MF106 and the F686.
- Outside diameter (D): 12 mm on the MF126 flanged ball bearing, against 10 mm on the MF106 and 13 mm on the F686.
- Width (B): 3 mm on the MF126 flanged ball bearing, against 2.5 mm on the MF106 and 3.5 mm on the F686.
- Chamfer dimension (r): at least 0.15 mm on the MF126 flanged ball bearing, against at least 0.1 mm on the MF106 and at least 0.15 mm on the F686.
- Flange diameter (D1): 13.2 mm on the MF126 flanged ball bearing, against 11.2 mm on the MF106 and 15 mm on the F686.
- Flange width (C1): 0.6 mm on the MF126 flanged ball bearing, against 0.6 mm on the MF106 and 1 mm on the F686.
The MF126 flanged ball bearing in its other versions
Other sizes
- One size smaller: MF106 Flanged Ball Bearing (Flange Bearing), F and MF series, 6 mm bore, 10 mm OD, 2.5 mm wide, 11.2 mm flange.
- One size larger: F686 Flanged Ball Bearing (Flange Bearing), F and MF series, 6 mm bore, 13 mm OD, 3.5 mm wide, 15 mm flange.
Documents
Sources
nmb-miniature-flanged, nsk-miniature-flanged. Full citations: the method page and this size's datasheet.
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