CC-BRG-MINI-FL-DS-MF128 rev A Size datasheet - MF128
'?) CommunityCAD
F and MF series MF128 flanged miniature ball bearing
Size datasheet: this bearing's values with their levels, conventions and sources, a row per product as sold.
For 8 mm shafts
Part keys bearings - miniature - flanged- mf128, bearings- miniature- flanged-mf128- 2z, bearings- miniature - flanged-mf128-2rs
Files 3 STEP AP214 (simplified)
Built from open MF128 - 2Z MF128ZZ -
MF128ZZ, front view, 3:1 MF128ZZ, view from above, 1.5:1 2RS MF128ZZ 2RS Width as the shielded bearing;
sealed row not listed by the sources.
Sym. Dimension Value Level
d Bore diameter, MF128 8.000 l1 +2
D Outside diameter, MF128 12.000 l1 +2
B Width, MF128 2.500 ll - 2
r Chamfer dimension r_s min, MF128 > 0.100 l1 +2
D1 Flange diameter, MF128 13.200 ll - 2
C1 Flange width, MF128 0.600 ll - 2
d Bore diameter, MF128ZZ 8.000 ll - 2
D Outside diameter, MF128ZZ 12.000 ll - 2
B Width, MF128ZZ 3.500 lt + 2
r Chamfer dimension r_s min, MF128ZZ > 0.100 l1 +2
D1 Flange diameter, MF128ZZ 13.600 ll - 2
C1 Flange width, MF128ZZ 0.800 ll - 2
Modeled value: nominal, else the midpoint of min-max. =: only that limit is given. * amber: one source (LO). c: a source value was corrected. Level - independent sources.
No published standard: NSK, MinebeaMitsumi and NTN listings Page 1/2 Flanged miniature ball bearing - MF128 - Dimensions in mm - CC-BY 4.0, lronPixel Labs LLC spec 70b2bf787ea8F07904ce030af50bcaf231F0c68F
Modeled from cited sources; not certified. Found an error? Use the feedback section on the part page.
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* CC-BRG-MINI-FL-DS-MF128 rev A '?) CommunityCAD Size datasheet - MF128
Conventions
e Rings and corners: Bore d, outside diameter D and width B at the nominals of the product's own row; the rings concentric, their faces flush. Ring corners are quarter-rounds of r_s min; the shape isn't specified.
« Ring faces: Each ring's face is (D - d)/8 wide; the annulus between them is the middle half of the radial section.
¢ Shield and seal (2Z, 2RS): A flat annulus recessed r_s min / 2 below the ring faces, the same for both: no groove, snap wire or lip. Each is built from its own row; a 2RS with no sealed row listed takes the shielded row, labelled.
« Open bearing: The annulus recessed B/4 per face, leaving a solid web between the rings. Balls, cage and raceways are not modeled.
« Flange: A plain disc D1 x C1 flush with the flange - side ring face at Z = 0, its outer edges rounded at r_s min; no relief groove, the corner at its root sharp.
« Values: d, D, B, D1 and C1 at their nominals; r at r_s min, the only limit the sources give. * Markings and grades: No markings. Tolerance class, internal clearance and lubricant are not geometry: one model per bearing and product.
Sources Source Publisher Retrieved a256 nsk-miniature-flanged NSK 2026-10-28 bQ556841F716 nmb-miniature-flanged MinebeaMitsumi (NMB) 2026-10-29 325e325FFd26
The whole series (verification map, corrections, drawings): CC- BRG- MINI-FL-DS.
No published standard: NSK, MinebeaMitsumi and NTN listings Page 2/2 Flanged miniature ball bearing - MF128 - Dimensions in mm - CC-BY 4.0, lronPixel Labs LLC spec 70b2bf787ea8F07904ce030af50bcaf231F0c68F
Modeled from cited sources; not certified. Found an error? Use the feedback section on the part page.