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KOYO / Single-row / metric series

KOYO 30256

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

Technical data available
Bore diameterd
280 mm
Outside diameterD
500 mm
WidthB
80 mm
Dynamic load ratingC
1580 kN
Static load ratingC0
1920 kN
Limiting speednG
610 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 diameterd280 mm
Outside diameterD500 mm
WidthB80 mm
Basic dynamic load ratingC1580 kN
Basic static load ratingC01920 kN
Fatigue load limitPu196 kN
Limiting speednG610 r/min
Mass≈m67.6 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
d280 mm
D500 mm
T89 mm
B80 mm
C67 mm
R(Min.)6 mm
R1(Min.)5 mm
Basic Load Ratings : Cr1580 kN
Basic Load Ratings : C0R1920 kN
Fatigue Load Limit : Cu196 kN
Limiting Speeds(Grease Lub.)610 min-1
Limiting Speeds(Oil Lub.)810 min-1
Load Center Spread : A96.2 mm
Constant E0.42
Axial Load Factors : Y11.44
Axial Load Factors : Y00.79
Da(Min.)440 mm
Db(Max.)325 mm
Da(Max.)478 mm
Db(Min.)475 mm
Sa(Min.)14 mm
Sb(Min.)21 mm
Ra(Max.)5 mm
Rb(Max.)4 mm
Mass(Refer.)67.6 kg

Technical documents & data sheet

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Record identity
KOYO 30256
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