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KOYO / Four-row tapered roller bearings

KOYO 4TR540A

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

Technical data available
Bore diameterd
540 mm
Outside diameterD
760 mm
WidthB
560 mm
Dynamic load ratingC
12200 kN
Static load ratingC0
30600 kN
Mass≈m
808 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 diameterd540 mm
Outside diameterD760 mm
WidthB560 mm
Basic dynamic load ratingC12200 kN
Basic static load ratingC030600 kN
Fatigue load limitPu2500 kN
Mass≈m808 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
d540 mm
D760 mm
T560 mm
W560 mm
R(Min.)5 mm
R1(Min.)6 mm
Basic Load Ratings : Cr12200 kN
Basic Load Ratings : C0R30600 kN
Fatigue Load Limit : Cu2500 kN
Axial Load Factors : Y22.03 mm
Axial Load Factors : Y33.02
Axial Load Factors : Y01.98
Constant E0.33
Da(Min.)587 mm
Da(Max.)704 mm
S(Min.)10.5 mm
Ra(Max.)4 mm
Rb(Max.)6 mm
Mass(Refer.)808 kg

Technical documents & data sheet

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Record identity
KOYO 4TR540A
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