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KOYO / Single-row / nf

KOYO NF256

Cylindrical 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
1430 kN
Static load ratingC0
1680 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 / NF
Bore diameterd280 mm
Outside diameterD500 mm
WidthB80 mm
Basic dynamic load ratingC1430 kN
Basic static load ratingC01680 kN
Fatigue load limitPu179 kN
Limiting speednG1000 r/min
Mass≈m72.8 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key040-010-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathCylindrical roller bearings - Single-row - NF
Official Classification 1Cylindrical roller bearings / Single-row / NF
Technical Data26 parameters
Technical Data
ParameterSymbolValue
d280 mm
D500 mm
B80 mm
R(Min.)5 mm
R1(Min.)5 mm
Fw- mm
Ew440 mm
Basic Load Ratings : Cr1430 kN
Basic Load Ratings : C0R1680 kN
Fatigue Load Limit : Cu179 kN
Limiting Speeds(Grease Lub.)1000 min-1
Limiting Speeds(Oil Lub.)1200 min-1
Sd1- mm
B1- mm
B2- mm
Da(Min.)300 mm
Db(Min.)- mm
Db(Max.)- mm
Dc(Min.)- mm
Dd(Min.)- mm
Da(Max.)- mm
Db(Max.)480 mm
Db(Min.)452 mm
Ra(Max.)4 mm
Rb(Max.)4 mm
Mass(Refer.)72.8 kg

Technical documents & data sheet

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Record identity
KOYO NF256
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