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KOYO / Four-row tapered roller bearings

KOYO M285848D/10/10D

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

Technical data available
Bore diameterd
825.5 mm
Outside diameterD
1168.4 mm
WidthB
844.55 mm
Dynamic load ratingC
27900 kN
Static load ratingC0
72300 kN
Mass≈m
2980 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 diameterd825.5 mm
Outside diameterD1168.4 mm
WidthB844.55 mm
Basic dynamic load ratingC27900 kN
Basic static load ratingC072300 kN
Fatigue load limitPu5110 kN
Mass≈m2980 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
d825.500 mm
D1168.4 mm
T844.550 mm
W844.550 mm
R(Min.)12.7 mm
R1(Min.)4.8 mm
Basic Load Ratings : Cr27900 kN
Basic Load Ratings : C0R72300 kN
Fatigue Load Limit : Cu5110 kN
Axial Load Factors : Y22.03 mm
Axial Load Factors : Y33.02
Axial Load Factors : Y01.98
Constant E0.33
Da(Min.)897 mm
Da(Max.)1083 mm
S(Min.)15.5 mm
Ra(Max.)12.7 mm
Rb(Max.)4.8 mm
Mass(Refer.)2980 kg

Technical documents & data sheet

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Record identity
KOYO M285848D/10/10D
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