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KOYO / Single-row / metric series

KOYO 30238JR

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

Technical data available
Bore diameterd
190 mm
Outside diameterD
340 mm
WidthB
55 mm
Dynamic load ratingC
912 kN
Static load ratingC0
1030 kN
Limiting speednG
1000 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 diameterd190 mm
Outside diameterD340 mm
WidthB55 mm
Basic dynamic load ratingC912 kN
Basic static load ratingC01030 kN
Fatigue load limitPu118 kN
Limiting speednG1000 r/min
Mass≈m21.9 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
d190 mm
D340 mm
T60 mm
B55 mm
C46 mm
R(Min.)5 mm
R1(Min.)4 mm
Basic Load Ratings : Cr912 kN
Basic Load Ratings : C0R1030 kN
Fatigue Load Limit : Cu118 kN
Limiting Speeds(Grease Lub.)1000 min-1
Limiting Speeds(Oil Lub.)1300 min-1
Load Center Spread : A66.4 mm
Constant E0.44
Axial Load Factors : Y11.38
Axial Load Factors : Y00.76
Da(Min.)298 mm
Db(Max.)225 mm
Da(Max.)322 mm
Db(Min.)318 mm
Sa(Min.)12 mm
Sb(Min.)13 mm
Ra(Max.)4 mm
Rb(Max.)3 mm
Mass(Refer.)21.9 kg

Technical documents & data sheet

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Record identity
KOYO 30238JR
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