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KOYO / Extra-small, miniature ball bearings / standard type / open

KOYO ML8012

Deep groove ball bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
8 mm
Outside diameterD
12 mm
WidthB
2.5 mm
Dynamic load ratingC
0.68 kN
Static load ratingC0
0.27 kN
Limiting speednG
47000 r/min

Use this page as a technical reference. Verify the current manufacturer specification and the complete application requirements before selection.

Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications10 parameters
Core specifications
ParameterSymbolValue
Variant / constructionExtra-small, miniature ball bearings / Standard type / Open
Bore diameterd8 mm
Outside diameterD12 mm
WidthB2.5 mm
Basic dynamic load ratingC0.68 kN
Basic static load ratingC00.27 kN
Fatigue load limitPu0.007 kN
Limiting speednG47000 r/min
Mass≈m0 kg
SealingOpen
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key010-020-010
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathDeep groove ball bearings - Extra-small, miniature ball bearings - Standard type - Open
Official Classification 1Deep groove ball bearings / Extra-small, miniature ball bearings / Standard type / Open
Technical Data14 parameters
Technical Data
ParameterSymbolValue
d8 mm
D12 mm
B2.5 mm
R(Min.)0.1 mm
Basic Load Ratings : Cr0.680 kN
Basic Load Ratings : C0R0.27 kN
Fatigue Load Limit : Cu0.007 kN
Factor : F016.4
Limiting Speeds(Grease Lub.)47000 min-1
Limiting Speeds(Oil Lub.)55000 min-1
Da(Min.)8.8 mm
Da(Max.)11.2 mm
Ra(Max.)0.08 mm
Mass(Refer.)0.8 g

Technical documents & data sheet

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Record identity
KOYO ML8012
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