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KOYO / Single-row / metric series

KOYO 30307DJR

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

Technical data available
Bore diameterd
35 mm
Outside diameterD
80 mm
WidthB
21 mm
Dynamic load ratingC
78.7 kN
Static load ratingC0
69.1 kN
Limiting speednG
4300 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 diameterd35 mm
Outside diameterD80 mm
WidthB21 mm
Basic dynamic load ratingC78.7 kN
Basic static load ratingC069.1 kN
Fatigue load limitPu9.85 kN
Limiting speednG4300 r/min
Mass≈m0.536 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
d35 mm
D80 mm
T22.75 mm
B21 mm
C15 mm
R(Min.)2 mm
R1(Min.)1.5 mm
Basic Load Ratings : Cr78.7 kN
Basic Load Ratings : C0R69.1 kN
Fatigue Load Limit : Cu9.85 kN
Limiting Speeds(Grease Lub.)4300 min-1
Limiting Speeds(Oil Lub.)6000 min-1
Load Center Spread : A26.8 mm
Constant E0.83
Axial Load Factors : Y10.73
Axial Load Factors : Y00.40
Da(Min.)66 mm
Db(Max.)44 mm
Da(Max.)70 mm
Db(Min.)76.5 mm
Sa(Min.)3 mm
Sb(Min.)7.5 mm
Ra(Max.)2 mm
Rb(Max.)1.5 mm
Mass(Refer.)0.536 kg

Technical documents & data sheet

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Record identity
KOYO 30307DJR
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