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KOYO / Four-row tapered roller bearings

KOYO HM262749D/10/10D

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

Technical data available
Bore diameterd
346.075 mm
Outside diameterD
488.95 mm
WidthB
358.775 mm
Dynamic load ratingC
4960 kN
Static load ratingC0
11600 kN
Mass≈m
214 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 diameterd346.075 mm
Outside diameterD488.95 mm
WidthB358.775 mm
Basic dynamic load ratingC4960 kN
Basic static load ratingC011600 kN
Fatigue load limitPu1110 kN
Mass≈m214 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
d346.075 mm
D488.950 mm
T358.775 mm
W358.775 mm
R(Min.)3.2 mm
R1(Min.)3.2 mm
Basic Load Ratings : Cr4960 kN
Basic Load Ratings : C0R11600 kN
Fatigue Load Limit : Cu1110 kN
Axial Load Factors : Y22.02 mm
Axial Load Factors : Y33.00
Axial Load Factors : Y01.97
Constant E0.33
Da(Min.)378 mm
Da(Max.)449 mm
S(Min.)8 mm
Ra(Max.)3.2 mm
Rb(Max.)3.2 mm
Mass(Refer.)214 kg

Technical documents & data sheet

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Record identity
KOYO HM262749D/10/10D
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