MR148 Miniature Ball Bearing (MR Bearing), MR series

For an 8 mm shaft and a 14 mm housing bore, the MR148 miniature ball bearing (MR series) is 3.5 mm wide. Modeled as simplified STEP files.

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

• Also searched as: MR148 bearing
• Model id: bearings-miniature-mr148
• Standard: MR series · size MR148

Files

Part key	Simplified
bearings-miniature-mr148	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		8		8	nominal	L1
D	Outside diameter		14		14	nominal	L1
B	Width		3.5		3.5	nominal	L1
r	Chamfer dimension	0.15			0.15	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-BRG-MINI-SZ-MR148.pdf.

The MR148 miniature ball bearing beside the MR128

The MR148 is the largest of the 12 MR series miniature ball bearings published here, from MR63 to MR148.

• Bore diameter (d): 8 mm on the MR148 miniature ball bearing, the same on the MR128.
• Outside diameter (D): 14 mm on the MR148 miniature ball bearing, against 12 mm on the MR128.
• Width (B): 3.5 mm on the MR148 miniature ball bearing, against 2.5 mm on the MR128.
• Chamfer dimension (r): at least 0.15 mm on the MR148 miniature ball bearing, against at least 0.1 mm on the MR128.

The MR148 miniature ball bearing in its other versions

• MR148-2Z Miniature Ball Bearing (MR Bearing), Shielded, MR series: width 4 mm.
• MR148-2RS Miniature Ball Bearing (MR Bearing), Sealed, MR series: width 4 mm.

Other sizes

• One size smaller: MR128 Miniature Ball Bearing (MR Bearing), MR series, 8 mm bore, 12 mm OD, 2.5 mm wide.

Documents

• CC-BRG-MINI-DS-MR148.pdf: MR148 datasheet: values with levels, sources
• CC-BRG-MINI-SZ-MR148.pdf: MR148 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

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

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