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KOYO / Single-row / metric series

KOYO 30305DJR

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

Technical data available
Bore diameterd
25 mm
Outside diameterD
62 mm
WidthB
17 mm
Dynamic load ratingC
49.7 kN
Static load ratingC0
42.5 kN
Limiting speednG
5700 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 diameterd25 mm
Outside diameterD62 mm
WidthB17 mm
Basic dynamic load ratingC49.7 kN
Basic static load ratingC042.5 kN
Fatigue load limitPu5.8 kN
Limiting speednG5700 r/min
Mass≈m0.269 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
d25 mm
D62 mm
T18.25 mm
B17 mm
C13 mm
R(Min.)1.5 mm
R1(Min.)1.5 mm
Basic Load Ratings : Cr49.7 kN
Basic Load Ratings : C0R42.5 kN
Fatigue Load Limit : Cu5.80 kN
Limiting Speeds(Grease Lub.)5700 min-1
Limiting Speeds(Oil Lub.)8000 min-1
Load Center Spread : A20.4 mm
Constant E0.83
Axial Load Factors : Y10.73
Axial Load Factors : Y00.40
Da(Min.)47 mm
Db(Max.)34 mm
Da(Max.)53.5 mm
Db(Min.)58.5 mm
Sa(Min.)3 mm
Sb(Min.)5 mm
Ra(Max.)1.5 mm
Rb(Max.)1.5 mm
Mass(Refer.)0.269 kg

Technical documents & data sheet

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Record identity
KOYO 30305DJR
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