F634-2RS Flanged Ball Bearing (Flange Bearing), Sealed, F and MF series

For a 4 mm shaft and a 16 mm housing bore, the F634-2RS flanged ball bearing (F and MF series, sealed) is 5 mm wide. Modeled as simplified STEP files. Its flange is 18 mm across and 1 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: F634-2RS bearing
• Model id: bearings-miniature-flanged-f634-2rs
• Standard: F and MF series · size F634

Files

Part key	Simplified
bearings-miniature-flanged-f634-2rs	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		4		4	nominal	L1
D	Outside diameter		16		16	nominal	L1
B	Width		5		5	nominal	L1
r	Chamfer dimension	0.3			0.3	single limit (min), modeled at the limit	L1
D1	Flange diameter		18		18	nominal	L1
C1	Flange width		1		1	nominal	L1

Drawing

As a PDF: CC-BRG-MINI-FL-SZ-F634.pdf.

The F634-2RS flanged ball bearing beside the F624-2RS and the MF85-2RS

The F634-2RS is number 14 of the 26 F and MF series flanged ball bearings published here, listed from F682-2RS to F698-2RS.

• Bore diameter (d): 4 mm on the F634-2RS flanged ball bearing, against 4 mm on the F624-2RS and 5 mm on the MF85-2RS.
• Outside diameter (D): 16 mm on the F634-2RS flanged ball bearing, against 13 mm on the F624-2RS and 8 mm on the MF85-2RS.
• Width (B): 5 mm on the F634-2RS flanged ball bearing, against 5 mm on the F624-2RS and 2.5 mm on the MF85-2RS.
• Chamfer dimension (r): at least 0.3 mm on the F634-2RS flanged ball bearing, against at least 0.2 mm on the F624-2RS and at least 0.08 mm on the MF85-2RS.
• Flange diameter (D1): 18 mm on the F634-2RS flanged ball bearing, against 15 mm on the F624-2RS and 9.2 mm on the MF85-2RS.
• Flange width (C1): 1 mm on the F634-2RS flanged ball bearing, against 1 mm on the F624-2RS and 0.6 mm on the MF85-2RS.

The F634-2RS flanged ball bearing in its other versions

• F634-2Z Flanged Ball Bearing (Flange Bearing), Shielded, F and MF series, with the same values.

Other sizes

• One size smaller: F624-2RS Flanged Ball Bearing (Flange Bearing), Sealed, F and MF series, 4 mm bore, 13 mm OD, 5 mm wide, 15 mm flange.
• One size larger: MF85-2RS Flanged Ball Bearing (Flange Bearing), Sealed, F and MF series, 5 mm bore, 8 mm OD, 2.5 mm wide, 9.2 mm flange.

Documents

• CC-BRG-MINI-FL-DS-F634.pdf: F634 datasheet: values with levels, sources
• CC-BRG-MINI-FL-SZ-F634.pdf: F634 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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