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KOYO / Four-row tapered roller bearings

KOYO EE737179D/260/261D

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

Technical data available
Bore diameterd
457.2 mm
Outside diameterD
660.4 mm
WidthB
323.847 mm
Dynamic load ratingC
6120 kN
Static load ratingC0
12700 kN
Mass≈m
365 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 tapered roller bearings
Bore diameterd457.2 mm
Outside diameterD660.4 mm
WidthB323.847 mm
Basic dynamic load ratingC6120 kN
Basic static load ratingC012700 kN
Fatigue load limitPu1180 kN
Mass≈m365 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key140-020-000
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathRolling mill roll neck bearings - Four-row tapered roller bearings
Official Classification 1Rolling mill roll neck bearings / Four-row tapered roller bearings
Technical Data19 parameters
Technical Data
ParameterSymbolValue
d457.200 mm
D660.400 mm
T323.847 mm
W323.850 mm
R(Min.)6.4 mm
R1(Min.)3.2 mm
Basic Load Ratings : Cr6120 kN
Basic Load Ratings : C0R12700 kN
Fatigue Load Limit : Cu1180 kN
Axial Load Factors : Y21.80 mm
Axial Load Factors : Y32.69
Axial Load Factors : Y01.76
Constant E0.37
Da(Min.)501 mm
Da(Max.)603 mm
S(Min.)9 mm
Ra(Max.)6.4 mm
Rb(Max.)3.2 mm
Mass(Refer.)365 kg

Technical documents & data sheet

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Record identity
KOYO EE737179D/260/261D
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