MF128 Flanged Ball Bearing (Flange Bearing), F and MF series

For an 8 mm shaft and a 12 mm housing bore, the MF128 flanged ball bearing (F and MF series) is 2.5 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: MF128 bearing
• Model id: bearings-miniature-flanged-mf128
• Standard: F and MF series · size MF128

Files

Part key	Simplified
bearings-miniature-flanged-mf128	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		8		8	nominal	L1
D	Outside diameter		12		12	nominal	L1
B	Width		2.5		2.5	nominal	L1
r	Chamfer dimension	0.1			0.1	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-MF128.pdf.

The MF128 flanged ball bearing beside the F627 and the MF148

The MF128 is number 34 of the 39 F and MF series flanged ball bearings published here, listed from F682 to F689.

• Bore diameter (d): 8 mm on the MF128 flanged ball bearing, against 7 mm on the F627 and 8 mm on the MF148.
• Outside diameter (D): 12 mm on the MF128 flanged ball bearing, against 22 mm on the F627 and 14 mm on the MF148.
• Width (B): 2.5 mm on the MF128 flanged ball bearing, against 7 mm on the F627 and 3.5 mm on the MF148.
• Chamfer dimension (r): at least 0.1 mm on the MF128 flanged ball bearing, against at least 0.3 mm on the F627 and at least 0.15 mm on the MF148.
• Flange diameter (D1): 13.2 mm on the MF128 flanged ball bearing, against 25 mm on the F627 and 15.6 mm on the MF148.
• Flange width (C1): 0.6 mm on the MF128 flanged ball bearing, against 1.5 mm on the F627 and 0.8 mm on the MF148.

The MF128 flanged ball bearing in its other versions

• MF128-2Z Flanged Ball Bearing (Flange Bearing), Shielded, F and MF series: width 3.5 mm, flange diameter 13.6 mm, flange width 0.8 mm.
• MF128-2RS Flanged Ball Bearing (Flange Bearing), Sealed, F and MF series: width 3.5 mm, flange diameter 13.6 mm, flange width 0.8 mm.

Other sizes

• One size smaller: F627 Flanged Ball Bearing (Flange Bearing), F and MF series, 7 mm bore, 22 mm OD, 7 mm wide, 25 mm flange.
• One size larger: MF148 Flanged Ball Bearing (Flange Bearing), F and MF series, 8 mm bore, 14 mm OD, 3.5 mm wide, 15.6 mm flange.

Documents

• CC-BRG-MINI-FL-DS-MF128.pdf: MF128 datasheet: values with levels, sources
• CC-BRG-MINI-FL-SZ-MF128.pdf: MF128 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

nmb-miniature-flanged, nsk-miniature-flanged. Full citations: the method page and this size's datasheet.

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