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KOYO / Four-row tapered roller bearings

KOYO LM286249D/210/210D

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

Technical data available
Bore diameterd
863.6 mm
Outside diameterD
1130.3 mm
WidthB
669.925 mm
Dynamic load ratingC
20500 kN
Static load ratingC0
59600 kN
Mass≈m
1840 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 diameterd863.6 mm
Outside diameterD1130.3 mm
WidthB669.925 mm
Basic dynamic load ratingC20500 kN
Basic static load ratingC059600 kN
Fatigue load limitPu4250 kN
Mass≈m1840 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
d863.600 mm
D1130.3 mm
T669.925 mm
W669.925 mm
R(Min.)12.7 mm
R1(Min.)4.8 mm
Basic Load Ratings : Cr20500 kN
Basic Load Ratings : C0R59600 kN
Fatigue Load Limit : Cu4250 kN
Axial Load Factors : Y22.08 mm
Axial Load Factors : Y33.10
Axial Load Factors : Y02.04
Constant E0.32
Da(Min.)920 mm
Da(Max.)1063 mm
S(Min.)15 mm
Ra(Max.)12.7 mm
Rb(Max.)4.8 mm
Mass(Refer.)1840 kg

Technical documents & data sheet

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Record identity
KOYO LM286249D/210/210D
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