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KOYO / Single-row / inch series

KOYO 27880/20

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

Technical data available
Bore diameterd
38.1 mm
Outside diameterD
80.035 mm
WidthB
23.698 mm
Dynamic load ratingC
91.6 kN
Static load ratingC0
91.6 kN
Limiting speednG
5200 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 diameterd38.1 mm
Outside diameterD80.035 mm
WidthB23.698 mm
Basic dynamic load ratingC91.6 kN
Basic static load ratingC091.6 kN
Fatigue load limitPu13.3 kN
Limiting speednG5200 r/min
Mass≈m0.586 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
d38.100 mm
D80.035 mm
T24.608 mm
B23.698 mm
C18.512 mm
R(Min.)0.8 mm
R1(Min.)1.6 mm
Basic Load Ratings : Cr91.6 kN
Basic Load Ratings : C0R91.6 kN
Fatigue Load Limit : Cu13.3 kN
Limiting Speeds(Grease Lub.)5200 min-1
Limiting Speeds(Oil Lub.)6900 min-1
Load Center Spread : A22.2 mm
Constant :E0.56
Axial Load Factors : Y11.07
Axial Load Factors : Y00.59
Da48.0 mm
Db47.0 mm
Da68.0 mm
Db75.0 mm
Ra(Max.)0.8 mm
Rb(Max.)1.6 mm
Mass(Refer.)0.586 kg

Technical documents & data sheet

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Record identity
KOYO 27880/20
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