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KOYO / Four-row tapered roller bearings

KOYO 37268A

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

Technical data available
Bore diameterd
340 mm
Outside diameterD
480 mm
WidthB
350 mm
Dynamic load ratingC
5050 kN
Static load ratingC0
11700 kN
Mass≈m
198 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 diameterd340 mm
Outside diameterD480 mm
WidthB350 mm
Basic dynamic load ratingC5050 kN
Basic static load ratingC011700 kN
Fatigue load limitPu1130 kN
Mass≈m198 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
d340 mm
D480 mm
T350 mm
W350 mm
R(Min.)5 mm
R1(Min.)6 mm
Basic Load Ratings : Cr5050 kN
Basic Load Ratings : C0R11700 kN
Fatigue Load Limit : Cu1130 kN
Axial Load Factors : Y22.03 mm
Axial Load Factors : Y33.02
Axial Load Factors : Y01.98
Constant E0.33
Da(Min.)371 mm
Da(Max.)443 mm
S(Min.)9.5 mm
Ra(Max.)4 mm
Rb(Max.)6 mm
Mass(Refer.)198 kg

Technical documents & data sheet

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Record identity
KOYO 37268A
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