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SKF / Tapered roller bearings

SKF 331138 AG

Four-row tapered roller bearing technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
139.7 mm
Outside diameterD
200.025 mm
Dynamic load ratingC
858 kN
Static load ratingC0
2080 kN
Mass≈m
16.9 kg
Bore diameter
139.7 mm

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 specifications10 parameters
Core specifications
ParameterSymbolValue
Variant / constructionTapered roller bearings
Bore diameterd139.7 mm
Outside diameterD200.025 mm
Basic dynamic load ratingC858 kN
Basic static load ratingC02080 kN
Fatigue load limitPu204 kN
Mass≈m16.9 kg
SealingWithout
CageSheet metal
LubricantNone
Dimensions6 parameters
Dimensions
ParameterSymbolValue
Bore diameter139.7 mm
Outside diameter200.025 mm
Width, total160.34 mm
Width, inner ring157.165 mm
Width, outer ring160.34 mm
Contact angle12.6 °
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryTapered roller bearings
Official taxonomy path/products/rolling-bearings/roller-bearings/tapered-roller-bearings/four-row-tapered-roller-bearings
Structure group IDBT4_001
Available from SKFYes
RemanufacturableNo
Engineering — Calculation data10 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC858 kN
Basic static load ratingC 02080 kN
Fatigue load limitP u204 kN
Comparative radial load ratingC F250 kN
Comparative axial load ratingC Fa41.4 kN
Thrust factorK1.7
Limiting valuee0.33
Calculation factorY 12
Calculation factorY 23
Calculation factorY 02
Engineering — Dimensions8 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd139.7 mm
Outside diameterD200.025 mm
Total bearing width over inner ringsB157.165 mm
Total bearing width over outer ringsT160.34 mm
Abutment diameter shaftd 1≈ 156 mm
Abutment diameter housingD 1≈ 181 mm
Chamfer dimension inner ringr 1,2min. 0.8 mm
Outer ring radius (chamfer)r 3,4min. 3.3 mm
Engineering — Engineering specifications2 parameters
Engineering — Engineering specifications
ParameterSymbolValue
Design variant/featureTQO/WI
Bore typeCylindrical
Logistics2 parameters
Logistics
ParameterSymbolValue
Product net weight16.9 kg
eClass code23-05-09-10
Performance2 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating858.0 kN
Basic static load rating2080.0 kN
Properties13 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
DesignTQO
Number of rows4
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageSheet metal
Arrangement of contact angle (double-row bearing)Not applicable
Matched arrangementNo
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWith
Indicative carbon footprint for new product62.5 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF 331138 AG
Document matching
Exact designation, assembly scope, revision and units must agree.

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