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KOYO / Single-row / metric series

KOYO 30203JR

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

Technical data available
Bore diameterd
17 mm
Outside diameterD
40 mm
WidthB
12 mm
Dynamic load ratingC
26 kN
Static load ratingC0
20.7 kN
Limiting speednG
10000 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 diameterd17 mm
Outside diameterD40 mm
WidthB12 mm
Basic dynamic load ratingC26 kN
Basic static load ratingC020.7 kN
Fatigue load limitPu2.85 kN
Limiting speednG10000 r/min
Mass≈m0.081 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
d17 mm
D40 mm
T13.25 mm
B12 mm
C11 mm
R(Min.)1 mm
R1(Min.)1 mm
Basic Load Ratings : Cr26.0 kN
Basic Load Ratings : C0R20.7 kN
Fatigue Load Limit : Cu2.85 kN
Limiting Speeds(Grease Lub.)10000 min-1
Limiting Speeds(Oil Lub.)14000 min-1
Load Center Spread : A10.1 mm
Constant E0.35
Axial Load Factors : Y11.74
Axial Load Factors : Y00.96
Da(Min.)33 mm
Db(Max.)23 mm
Da(Max.)34.5 mm
Db(Min.)37 mm
Sa(Min.)2 mm
Sb(Min.)2 mm
Ra(Max.)1 mm
Rb(Max.)1 mm
Mass(Refer.)0.081 kg

Technical documents & data sheet

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Record identity
KOYO 30203JR
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