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KOYO / Four-row tapered roller bearings

KOYO 4TR708B

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

Technical data available
Bore diameterd
708.025 mm
Outside diameterD
930.275 mm
WidthB
565.15 mm
Dynamic load ratingC
14700 kN
Static load ratingC0
40300 kN
Mass≈m
1050 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 diameterd708.025 mm
Outside diameterD930.275 mm
WidthB565.15 mm
Basic dynamic load ratingC14700 kN
Basic static load ratingC040300 kN
Fatigue load limitPu3100 kN
Mass≈m1050 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
d708.025 mm
D930.275 mm
T565.150 mm
W565.150 mm
R(Min.)6.4 mm
R1(Min.)3.2 mm
Basic Load Ratings : Cr14700 kN
Basic Load Ratings : C0R40300 kN
Fatigue Load Limit : Cu3100 kN
Axial Load Factors : Y22.03 mm
Axial Load Factors : Y33.02
Axial Load Factors : Y01.98
Constant E0.33
Da(Min.)753 mm
Da(Max.)878 mm
S(Min.)11 mm
Ra(Max.)6.4 mm
Rb(Max.)3.2 mm
Mass(Refer.)1050 kg

Technical documents & data sheet

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Record identity
KOYO 4TR708B
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