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KOYO / Four-row tapered roller bearings

KOYO M667947D/911/911D

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

Technical data available
Bore diameterd
409.575 mm
Outside diameterD
546.1 mm
WidthB
334.963 mm
Dynamic load ratingC
4890 kN
Static load ratingC0
11500 kN
Mass≈m
213 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 diameterd409.575 mm
Outside diameterD546.1 mm
WidthB334.963 mm
Basic dynamic load ratingC4890 kN
Basic static load ratingC011500 kN
Fatigue load limitPu1080 kN
Mass≈m213 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
d409.575 mm
D546.100 mm
T334.963 mm
W334.963 mm
R(Min.)6.4 mm
R1(Min.)1.6 mm
Basic Load Ratings : Cr4890 kN
Basic Load Ratings : C0R11500 kN
Fatigue Load Limit : Cu1080 kN
Axial Load Factors : Y21.62 mm
Axial Load Factors : Y32.42
Axial Load Factors : Y01.59
Constant E0.42
Da(Min.)432 mm
Da(Max.)509 mm
S(Min.)8.5 mm
Ra(Max.)6.4 mm
Rb(Max.)1.6 mm
Mass(Refer.)213 kg

Technical documents & data sheet

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Record identity
KOYO M667947D/911/911D
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