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KOYO / Open type

KOYO 1204

Self-aligning ball bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
20 mm
Outside diameterD
47 mm
WidthB
14 mm
Dynamic load ratingC
12.4 kN
Static load ratingC0
2.65 kN
Limiting speednG
14000 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 / constructionOpen type
Bore diameterd20 mm
Outside diameterD47 mm
WidthB14 mm
Basic dynamic load ratingC12.4 kN
Basic static load ratingC02.65 kN
Fatigue load limitPu0.16 kN
Limiting speednG14000 r/min
Mass≈m0.12 kg
SealingOpen
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key030-010-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathSelf-aligning ball bearings - Open type
Official Classification 1Self-aligning ball bearings / Open type
Technical Data17 parameters
Technical Data
ParameterSymbolValue
d20 mm
D47 mm
B14 mm
R(Min.)1 mm
Basic Load Ratings : Cr12.4 kN
Basic Load Ratings : C0R2.65 kN
Fatigue Load Limit : Cu0.16 kN
Limiting Speeds(Grease Lub.)14000 min-1
Limiting Speeds(Oil Lub.)17000 min-1
Constant :E0.29
Axial Load Factors : Y12.16
Axial Load Factors : Y23.35
Axial Load Factors : Y02.27
Da(Min.)25 mm
Da(Max.)42 mm
Ra(Max.)1 mm
Mass(Refer.)0.120 kg

Technical documents & data sheet

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Record identity
KOYO 1204
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