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SKF / Tapered roller bearings

SKF BT4-8173 E91/C725

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

Technical data available
Bore diameterd
450 mm
Outside diameterD
595 mm
Dynamic load ratingC
6550 kN
Static load ratingC0
15300 kN
Mass≈m
274 kg
Bore diameter
450.0 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 diameterd450 mm
Outside diameterD595 mm
Basic dynamic load ratingC6550 kN
Basic static load ratingC015300 kN
Fatigue load limitPu1160 kN
Mass≈m274 kg
SealingSeal on both sides
CageSheet metal
LubricantNone
Dimensions6 parameters
Dimensions
ParameterSymbolValue
Bore diameter450.0 mm
Outside diameter595.0 mm
Width, total368.0 mm
Width, inner ring368.0 mm
Width, outer ring368.0 mm
Contact angle12.0 °
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
RemanufacturableYes
Engineering — Calculation data11 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC6550 kN
Basic static load ratingC 015300 kN
Fatigue load limitP u1160 kN
Comparative radial load ratingC F1630 kN
Comparative axial load ratingC Fa254 kN
Thrust factorK1.8
Limiting valuee0.31
Calculation factorY 12.2
Calculation factorY 23.3
Calculation factorY 02.2
Engineering — Dimensions8 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd450 mm
Outside diameterD595 mm
Total bearing width over inner ringsB368 mm
Total bearing width over outer ringsT368 mm
Abutment diameter shaftd 1≈ 476 mm
Abutment diameter housingD 1≈ 540 mm
Chamfer dimension inner ringr 1,2min. 2.5 mm
Outer ring radius (chamfer)r 3,4min. 6 mm
Engineering — Engineering specifications2 parameters
Engineering — Engineering specifications
ParameterSymbolValue
Design variant/featureTQOSN/GWSI
Bore typeCylindrical with helical groove
Logistics1 parameter
Logistics
ParameterSymbolValue
Product net weight274.0 kg
Performance3 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating6550.0 kN
Basic static load rating15300.0 kN
SKF performance classSKF Explorer
Properties16 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
DesignTQO
Number of rows4
Locating feature, bearing outer ringWithout
Bore typeCylindrical with helical groove
CageSheet metal
Arrangement of contact angle (double-row bearing)Not applicable
Matched arrangementNo
CoatingWithout
SealingSeal on both sides
Sealing typeContact
LubricantNone
Relubrication featureWith
Candidate for remanufacturingYes
Indicative carbon footprint for new product1014.0 kg CO 2 e
Indicative carbon footprint for remanufactured product337.0 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 BT4-8173 E91/C725
Document matching
Exact designation, assembly scope, revision and units must agree.

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