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KOYO / Single-row / nnu / tapered type

KOYO NNU4968K

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

Technical data available
Bore diameterd
340 mm
Outside diameterD
460 mm
WidthB
118 mm
Dynamic load ratingC
1580 kN
Static load ratingC0
2930 kN
Limiting speednG
990 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 / NNU / Tapered type
Bore diameterd340 mm
Outside diameterD460 mm
WidthB118 mm
Basic dynamic load ratingC1580 kN
Basic static load ratingC02930 kN
Fatigue load limitPu301 kN
Limiting speednG990 r/min
Mass≈m54.3 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key040-020-020
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathCylindrical roller bearings - Single-row - NNU - Tapered type
Official Classification 1Cylindrical roller bearings / Single-row / NNU / Tapered type
Technical Data17 parameters
Technical Data
ParameterSymbolValue
d340 mm
D460 mm
B118 mm
R(Min.)3 mm
Fw372 mm
Ew- mm
Basic Load Ratings : Cr1580 kN
Basic Load Ratings : C0R2930 kN
Fatigue Load Limit : Cu301 kN
Limiting Speeds(Grease Lub.)990 min-1
Limiting Speeds(Oil Lub.)1200 min-1
Da(Min.)- mm
Da(Max.)368 mm
Db(Min.)383 mm
Da(Max.)447 mm
Ra(Max.)2.5 mm
Mass(Refer.)54.3 kg

Technical documents & data sheet

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Record identity
KOYO NNU4968K
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