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KOYO / Single-row / inch series

KOYO 39590/21

Tapered roller bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
66.675 mm
Outside diameterD
112.712 mm
WidthB
30.162 mm
Dynamic load ratingC
184 kN
Static load ratingC0
207 kN
Limiting speednG
3300 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 / constructionSingle-row / Inch series
Bore diameterd66.675 mm
Outside diameterD112.712 mm
WidthB30.162 mm
Basic dynamic load ratingC184 kN
Basic static load ratingC0207 kN
Fatigue load limitPu32.1 kN
Limiting speednG3300 r/min
Mass≈m1.192 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key050-010-020
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathTapered roller bearings - Single-row - Inch series
Official Classification 1Tapered roller bearings / Single-row / Inch series
Technical Data23 parameters
Technical Data
ParameterSymbolValue
d66.675 mm
D112.712 mm
T30.162 mm
B30.162 mm
C23.812 mm
R(Min.)3.6 mm
R1(Min.)0.8 mm
Basic Load Ratings : Cr184 kN
Basic Load Ratings : C0R207 kN
Fatigue Load Limit : Cu32.1 kN
Limiting Speeds(Grease Lub.)3300 min-1
Limiting Speeds(Oil Lub.)4500 min-1
Load Center Spread : A23.3 mm
Constant :E0.34
Axial Load Factors : Y11.77
Axial Load Factors : Y00.97
Da80.0 mm
Db74.0 mm
Da103.0 mm
Db107.0 mm
Ra(Max.)3.6 mm
Rb(Max.)0.8 mm
Mass(Refer.)1.192 kg

Technical documents & data sheet

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Record identity
KOYO 39590/21
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