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KOYO / Single-row / inch series

KOYO 6580R/35

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

Technical data available
Bore diameterd
88.9 mm
Outside diameterD
161.925 mm
WidthB
55.1 mm
Dynamic load ratingC
395 kN
Static load ratingC0
471 kN
Limiting speednG
2400 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 diameterd88.9 mm
Outside diameterD161.925 mm
WidthB55.1 mm
Basic dynamic load ratingC395 kN
Basic static load ratingC0471 kN
Fatigue load limitPu61.4 kN
Limiting speednG2400 r/min
Mass≈m4.74 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
d88.900 mm
D161.925 mm
T53.975 mm
B55.100 mm
C42.862 mm
R(Min.)3.6 mm
R1(Min.)3.2 mm
Basic Load Ratings : Cr395 kN
Basic Load Ratings : C0R471 kN
Fatigue Load Limit : Cu61.4 kN
Limiting Speeds(Grease Lub.)2400 min-1
Limiting Speeds(Oil Lub.)3200 min-1
Load Center Spread : A49.8 mm
Constant :E0.40
Axial Load Factors : Y11.50
Axial Load Factors : Y00.82
Da109.0 mm
Db98.0 mm
Da141.0 mm
Db154.0 mm
Ra(Max.)3.6 mm
Rb(Max.)3.2 mm
Mass(Refer.)4.74 kg

Technical documents & data sheet

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Record identity
KOYO 6580R/35
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