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KOYO / Four-row tapered roller bearings

KOYO M275349D/310/310D

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

Technical data available
Bore diameterd
519.113 mm
Outside diameterD
736.6 mm
WidthB
536.575 mm
Dynamic load ratingC
11400 kN
Static load ratingC0
27200 kN
Mass≈m
743 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 diameterd519.113 mm
Outside diameterD736.6 mm
WidthB536.575 mm
Basic dynamic load ratingC11400 kN
Basic static load ratingC027200 kN
Fatigue load limitPu2270 kN
Mass≈m743 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
d519.113 mm
D736.600 mm
T536.575 mm
W536.575 mm
R(Min.)6.4 mm
R1(Min.)3.2 mm
Basic Load Ratings : Cr11400 kN
Basic Load Ratings : C0R27200 kN
Fatigue Load Limit : Cu2270 kN
Axial Load Factors : Y22.03 mm
Axial Load Factors : Y33.02
Axial Load Factors : Y01.98
Constant E0.33
Da(Min.)562 mm
Da(Max.)681 mm
S(Min.)10.5 mm
Ra(Max.)6.4 mm
Rb(Max.)3.2 mm
Mass(Refer.)743 kg

Technical documents & data sheet

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Record identity
KOYO M275349D/310/310D
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