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KOYO / Single-row / metric series

KOYO 32011JR

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

Technical data available
Bore diameterd
55 mm
Outside diameterD
90 mm
WidthB
23 mm
Dynamic load ratingC
106 kN
Static load ratingC0
121 kN
Limiting speednG
4100 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 / Metric series
Bore diameterd55 mm
Outside diameterD90 mm
WidthB23 mm
Basic dynamic load ratingC106 kN
Basic static load ratingC0121 kN
Fatigue load limitPu18.2 kN
Limiting speednG4100 r/min
Mass≈m0.569 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key050-010-010
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathTapered roller bearings - Single-row - Metric series
Official Classification 1Tapered roller bearings / Single-row / Metric series
Technical Data25 parameters
Technical Data
ParameterSymbolValue
d55 mm
D90 mm
T23 mm
B23 mm
C17.5 mm
R(Min.)1.5 mm
R1(Min.)1.5 mm
Basic Load Ratings : Cr106 kN
Basic Load Ratings : C0R121 kN
Fatigue Load Limit : Cu18.2 kN
Limiting Speeds(Grease Lub.)4100 min-1
Limiting Speeds(Oil Lub.)5500 min-1
Load Center Spread : A19.8 mm
Constant E0.41
Axial Load Factors : Y11.48
Axial Load Factors : Y00.81
Da(Min.)81 mm
Db(Max.)63 mm
Da(Max.)81.5 mm
Db(Min.)86 mm
Sa(Min.)4 mm
Sb(Min.)5.5 mm
Ra(Max.)1.5 mm
Rb(Max.)1.5 mm
Mass(Refer.)0.569 kg

Technical documents & data sheet

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Record identity
KOYO 32011JR
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