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KOYO / Single-row / metric series

KOYO 30308JR

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

Technical data available
Bore diameterd
40 mm
Outside diameterD
90 mm
WidthB
23 mm
Dynamic load ratingC
113 kN
Static load ratingC0
101 kN
Limiting speednG
4500 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 diameterd40 mm
Outside diameterD90 mm
WidthB23 mm
Basic dynamic load ratingC113 kN
Basic static load ratingC0101 kN
Fatigue load limitPu15.5 kN
Limiting speednG4500 r/min
Mass≈m0.757 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
d40 mm
D90 mm
T25.25 mm
B23 mm
C20 mm
R(Min.)2 mm
R1(Min.)1.5 mm
Basic Load Ratings : Cr113 kN
Basic Load Ratings : C0R101 kN
Fatigue Load Limit : Cu15.5 kN
Limiting Speeds(Grease Lub.)4500 min-1
Limiting Speeds(Oil Lub.)6100 min-1
Load Center Spread : A19.9 mm
Constant E0.35
Axial Load Factors : Y11.74
Axial Load Factors : Y00.96
Da(Min.)77 mm
Db(Max.)52 mm
Da(Max.)80 mm
Db(Min.)82 mm
Sa(Min.)3 mm
Sb(Min.)5 mm
Ra(Max.)2 mm
Rb(Max.)1.5 mm
Mass(Refer.)0.757 kg

Technical documents & data sheet

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Record identity
KOYO 30308JR
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