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KOYO / Four-row tapered roller bearings

KOYO 4TR730

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

Technical data available
Bore diameterd
730 mm
Outside diameterD
1035 mm
WidthB
755 mm
Dynamic load ratingC
21100 kN
Static load ratingC0
54300 kN
Mass≈m
2080 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 diameterd730 mm
Outside diameterD1035 mm
WidthB755 mm
Basic dynamic load ratingC21100 kN
Basic static load ratingC054300 kN
Fatigue load limitPu4000 kN
Mass≈m2080 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
d730 mm
D1035 mm
T755 mm
W755 mm
R(Min.)5 mm
R1(Min.)2.5 mm
Basic Load Ratings : Cr21100 kN
Basic Load Ratings : C0R54300 kN
Fatigue Load Limit : Cu4000 kN
Axial Load Factors : Y22.03 mm
Axial Load Factors : Y33.02
Axial Load Factors : Y01.98
Constant E0.33
Da(Min.)795 mm
Da(Max.)955 mm
S(Min.)11 mm
Ra(Max.)4 mm
Rb(Max.)2 mm
Mass(Refer.)2080 kg

Technical documents & data sheet

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Record identity
KOYO 4TR730
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