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KOYO / Double-row

KOYO 4208

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

Technical data available
Bore diameterd
40 mm
Outside diameterD
80 mm
WidthB
23 mm
Dynamic load ratingC
42.2 kN
Static load ratingC0
42.4 kN
Limiting speednG
4700 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 specifications9 parameters
Core specifications
ParameterSymbolValue
Variant / constructionDouble-row
Bore diameterd40 mm
Outside diameterD80 mm
WidthB23 mm
Basic dynamic load ratingC42.2 kN
Basic static load ratingC042.4 kN
Fatigue load limitPu2.5 kN
Limiting speednG4700 r/min
Mass≈m0.558 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key010-040-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathDeep groove ball bearings - Double-row
Official Classification 1Deep groove ball bearings / Double-row
Technical Data13 parameters
Technical Data
ParameterSymbolValue
d40 mm
D80 mm
B23 mm
R(Min.)1.1 mm
Basic Load Ratings : Cr42.2 kN
Basic Load Ratings : C0R42.4 kN
Fatigue Load Limit : Cu2.50 kN
Factor : F015.5
Limiting Speeds(Grease Lub.)4700 min-1
Limiting Speeds(Oil Lub.)6300 min-1
Da(Max.)73.5 mm
Ra(Max.)1 mm
Mass(Refer.)0.558 kg

Technical documents & data sheet

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Record identity
KOYO 4208
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