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KOYO / Four-row tapered roller bearings

KOYO EE531201D/300/301XD

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

Technical data available
Bore diameterd
508 mm
Outside diameterD
762 mm
WidthB
463.55 mm
Dynamic load ratingC
9760 kN
Static load ratingC0
19900 kN
Mass≈m
736 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 diameterd508 mm
Outside diameterD762 mm
WidthB463.55 mm
Basic dynamic load ratingC9760 kN
Basic static load ratingC019900 kN
Fatigue load limitPu1780 kN
Mass≈m736 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
d508.000 mm
D762.000 mm
T463.550 mm
W463.550 mm
R(Min.)6.4 mm
R1(Min.)6.4 mm
Basic Load Ratings : Cr9760 kN
Basic Load Ratings : C0R19900 kN
Fatigue Load Limit : Cu1780 kN
Axial Load Factors : Y21.78 mm
Axial Load Factors : Y32.65
Axial Load Factors : Y01.74
Constant E0.38
Da(Min.)564 mm
Da(Max.)696 mm
S(Min.)11.5 mm
Ra(Max.)6.4 mm
Rb(Max.)6.4 mm
Mass(Refer.)736 kg

Technical documents & data sheet

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Record identity
KOYO EE531201D/300/301XD
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