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KOYO / Four-row cylindrical roller bearings

KOYO 74FC52400W

Rolling mill roll neck bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
370 mm
Outside diameterD
520 mm
WidthB
400 mm
Dynamic load ratingC
5080 kN
Static load ratingC0
11900 kN
Mass≈m
268 kg

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 specifications8 parameters
Core specifications
ParameterSymbolValue
Variant / constructionFour-row cylindrical roller bearings
Bore diameterd370 mm
Outside diameterD520 mm
WidthB400 mm
Basic dynamic load ratingC5080 kN
Basic static load ratingC011900 kN
Fatigue load limitPu1150 kN
Mass≈m268 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key140-010-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathRolling mill roll neck bearings - Four-row cylindrical roller bearings
Official Classification 1Rolling mill roll neck bearings / Four-row cylindrical roller bearings
Technical Data15 parameters
Technical Data
ParameterSymbolValue
d370 mm
D520 mm
B400 mm
C400 mm
Fw413 mm
R(Min.)5 mm
R1(Min.)5 mm
Basic Load Ratings : Cr5080 kN
Basic Load Ratings : C0R11900 kN
Fatigue Load Limit : Cu1150 kN
Da(Min.)481 mm
Da(Max.)498 mm
Ra(Max.)4 mm
Rb(Max.)4 mm
Mass(Refer.)268 kg

Technical documents & data sheet

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Record identity
KOYO 74FC52400W
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