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KOYO / Four-row tapered roller bearings

KOYO M281349D/10/10D

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

Technical data available
Bore diameterd
649.924 mm
Outside diameterD
914.898 mm
WidthB
674 mm
Dynamic load ratingC
17100 kN
Static load ratingC0
43800 kN
Mass≈m
1430 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 diameterd649.924 mm
Outside diameterD914.898 mm
WidthB674 mm
Basic dynamic load ratingC17100 kN
Basic static load ratingC043800 kN
Fatigue load limitPu3360 kN
Mass≈m1430 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
d649.924 mm
D914.898 mm
T674.000 mm
W672.000 mm
R(Min.)6 mm
R1(Min.)3.6 mm
Basic Load Ratings : Cr17100 kN
Basic Load Ratings : C0R43800 kN
Fatigue Load Limit : Cu3360 kN
Axial Load Factors : Y22.03 mm
Axial Load Factors : Y33.02
Axial Load Factors : Y01.98
Constant E0.33
Da(Min.)703 mm
Da(Max.)844 mm
S(Min.)12 mm
Ra(Max.)6 mm
Rb(Max.)3.6 mm
Mass(Refer.)1430 kg

Technical documents & data sheet

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Record identity
KOYO M281349D/10/10D
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