MF128-2RS Flanged Ball Bearing (Flange Bearing), Sealed, F and MF series

For an 8 mm shaft and a 12 mm housing bore, the MF128-2RS flanged ball bearing (F and MF series, sealed) is 3.5 mm wide. Modeled as simplified STEP files. Its flange is 13.6 mm across and 0.8 mm thick. Width as the shielded bearing; sealed row not listed by the sources.

How these parts are made, and what the levels mean: read the method

• Also searched as: MF128-2RS bearing
• Model id: bearings-miniature-flanged-mf128-2rs
• Standard: F and MF series · size MF128

Files

Part key	Simplified
bearings-miniature-flanged-mf128-2rs	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		3.5		3.5	nominal	L1
r	Chamfer dimension	0.1			0.1	single limit (min), modeled at the limit	L1
D1	Flange diameter		13.6		13.6	nominal	L1
C1	Flange width		0.8		0.8	nominal	L1

Drawing

As a PDF: CC-BRG-MINI-FL-SZ-MF128.pdf.

The MF128-2RS flanged ball bearing beside the F607-2RS and the MF148-2RS

The MF128-2RS is number 24 of the 26 F and MF series flanged ball bearings published here, listed from F682-2RS to F698-2RS.

• Bore diameter (d): 8 mm on the MF128-2RS flanged ball bearing, against 7 mm on the F607-2RS and 8 mm on the MF148-2RS.
• Outside diameter (D): 12 mm on the MF128-2RS flanged ball bearing, against 19 mm on the F607-2RS and 14 mm on the MF148-2RS.
• Width (B): 3.5 mm on the MF128-2RS flanged ball bearing, against 6 mm on the F607-2RS and 4 mm on the MF148-2RS.
• Chamfer dimension (r): at least 0.1 mm on the MF128-2RS flanged ball bearing, against at least 0.3 mm on the F607-2RS and at least 0.15 mm on the MF148-2RS.
• Flange diameter (D1): 13.6 mm on the MF128-2RS flanged ball bearing, against 22 mm on the F607-2RS and 15.6 mm on the MF148-2RS.
• Flange width (C1): 0.8 mm on the MF128-2RS flanged ball bearing, against 1.5 mm on the F607-2RS and 0.8 mm on the MF148-2RS.

The MF128-2RS flanged ball bearing in its other versions

• MF128 Flanged Ball Bearing (Flange Bearing), F and MF series: width 2.5 mm, flange diameter 13.2 mm, flange width 0.6 mm.
• MF128-2Z Flanged Ball Bearing (Flange Bearing), Shielded, F and MF series, with the same values.

Other sizes

• One size smaller: F607-2RS Flanged Ball Bearing (Flange Bearing), Sealed, F and MF series, 7 mm bore, 19 mm OD, 6 mm wide, 22 mm flange.
• One size larger: MF148-2RS Flanged Ball Bearing (Flange Bearing), Sealed, F and MF series, 8 mm bore, 14 mm OD, 4 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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