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SKF / Tapered roller bearings

SKF BT4B 334048/HA1

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

Technical data available
Bore diameterd
384.175 mm
Outside diameterD
546.1 mm
Dynamic load ratingC
6440 kN
Static load ratingC0
16600 kN
Mass≈m
321 kg
Bore diameter
384.175 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 diameterd384.175 mm
Outside diameterD546.1 mm
Basic dynamic load ratingC6440 kN
Basic static load ratingC016600 kN
Fatigue load limitPu1290 kN
Mass≈m321 kg
SealingWithout
CageSheet metal
LubricantNone
Dimensions6 parameters
Dimensions
ParameterSymbolValue
Bore diameter384.175 mm
Outside diameter546.1 mm
Width, total437.96 mm
Width, inner ring437.96 mm
Width, outer ring384.175 mm
Contact angle12.5 °
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_002
Available from SKFYes
RemanufacturableYes
Engineering — Calculation data10 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC6440 kN
Basic static load ratingC 016600 kN
Fatigue load limitP u1290 kN
Comparative radial load ratingC F1730 kN
Comparative axial load ratingC Fa278 kN
Thrust factorK1.8
Limiting valuee0.33
Calculation factorY 12
Calculation factorY 23
Calculation factorY 02
Engineering — Dimensions7 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd384.175 mm
Outside diameterD546.1 mm
Total bearing width over inner ringsB437.96 mm
Total bearing width over outer ringsT384.175 mm
Abutment diameter shaftd 1≈ 455 mm
Abutment diameter housingD 1≈ 520 mm
Inner ring radius (chamfer)r 1,2min. 6.4 mm
Engineering — Engineering specifications2 parameters
Engineering — Engineering specifications
ParameterSymbolValue
Design variant/featureTQI
Bore typeCylindrical
Logistics2 parameters
Logistics
ParameterSymbolValue
Product net weight321.0 kg
eClass code23-05-09-10
Performance2 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating6440.0 kN
Basic static load rating16600.0 kN
Properties15 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
DesignTQI
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 featureWithout
Candidate for remanufacturingYes
Indicative carbon footprint for new product1188.0 kg CO 2 e
Indicative carbon footprint for remanufactured product395.0 kg CO 2 e

Technical documents & data sheet

This product page is a BearingScope catalogue reference, not a manufacturer-certified drawing. Preserve the full brand and designation when comparing files.

Record identity
SKF BT4B 334048/HA1
Document matching
Exact designation, assembly scope, revision and units must agree.

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