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KOYO / Single-row / metric series

KOYO 30321JR

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

Technical data available
Bore diameterd
105 mm
Outside diameterD
225 mm
WidthB
49 mm
Dynamic load ratingC
581 kN
Static load ratingC0
578 kN
Limiting speednG
1700 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 diameterd105 mm
Outside diameterD225 mm
WidthB49 mm
Basic dynamic load ratingC581 kN
Basic static load ratingC0578 kN
Fatigue load limitPu73.6 kN
Limiting speednG1700 r/min
Mass≈m9.73 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
d105 mm
D225 mm
T53.5 mm
B49 mm
C41 mm
R(Min.)4 mm
R1(Min.)3 mm
Basic Load Ratings : Cr581 kN
Basic Load Ratings : C0R578 kN
Fatigue Load Limit : Cu73.6 kN
Limiting Speeds(Grease Lub.)1700 min-1
Limiting Speeds(Oil Lub.)2300 min-1
Load Center Spread : A44.1 mm
Constant E0.35
Axial Load Factors : Y11.74
Axial Load Factors : Y00.96
Da(Min.)193 mm
Db(Max.)132 mm
Da(Max.)211 mm
Db(Min.)209 mm
Sa(Min.)7 mm
Sb(Min.)12.5 mm
Ra(Max.)3 mm
Rb(Max.)2.5 mm
Mass(Refer.)9.73 kg

Technical documents & data sheet

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Record identity
KOYO 30321JR
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