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KOYO / Single-row / inch series

KOYO 25572/20

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

Technical data available
Bore diameterd
38.1 mm
Outside diameterD
82.931 mm
WidthB
25.4 mm
Dynamic load ratingC
96.8 kN
Static load ratingC0
100 kN
Limiting speednG
4800 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 diameterD82.931 mm
WidthB25.4 mm
Basic dynamic load ratingC96.8 kN
Basic static load ratingC0100 kN
Fatigue load limitPu15.1 kN
Limiting speednG4800 r/min
Mass≈m0.64 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
D82.931 mm
T23.812 mm
B25.400 mm
C19.050 mm
R(Min.)0.8 mm
R1(Min.)0.8 mm
Basic Load Ratings : Cr96.8 kN
Basic Load Ratings : C0R100 kN
Fatigue Load Limit : Cu15.1 kN
Limiting Speeds(Grease Lub.)4800 min-1
Limiting Speeds(Oil Lub.)6300 min-1
Load Center Spread : A17.5 mm
Constant :E0.33
Axial Load Factors : Y11.79
Axial Load Factors : Y00.99
Da46.0 mm
Db46.0 mm
Da74.0 mm
Db77.0 mm
Ra(Max.)0.8 mm
Rb(Max.)0.8 mm
Mass(Refer.)0.64 kg

Technical documents & data sheet

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Record identity
KOYO 25572/20
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