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SKF / Angular contact ball bearings

SKF QJ 1248 MA/344524

Four-point contact ball bearing technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
240 mm
Outside diameterD
440 mm
WidthB
85 mm
Dynamic load ratingC
663 kN
Static load ratingC0
1220 kN
Limiting speednG
2400 r/min

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 specifications13 parameters
Core specifications
ParameterSymbolValue
Variant / constructionAngular contact ball bearings
Bore diameterd240 mm
Outside diameterD440 mm
WidthB85 mm
Basic dynamic load ratingC663 kN
Basic static load ratingC01220 kN
Fatigue load limitPu28 kN
Limiting speednG2400 r/min
Mass≈m62 kg
SealingWithout
CageMachined brass
Bearing materialBearing steel
LubricantNone
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter240.0 mm
Outside diameter440.0 mm
Width85.0 mm
Contact angle45.0 °
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryAngular contact ball bearings
Official taxonomy path/products/rolling-bearings/ball-bearings/angular-contact-ball-bearings/four-point-contact-ball-bearings
Structure group IDBAQ_001
Available from SKFYes
RemanufacturableYes
Engineering — Abutment dimensions3 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Abutment diameter shaftd amin. 258 mm
Abutment diameter housingD amax. 422 mm
Fillet radiusr amax. 3 mm
Engineering — Calculation data10 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC663 kN
Basic static load ratingC 01220 kN
Fatigue load limitP u28 kN
Limiting speed2400 r/min
Calculation factorA9
Limiting valuee1.3
Calculation factorX0.54
Calculation factorY 00.44
Calculation factorY 10.47
Calculation factorY 20.81
Engineering — Dimensions7 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd240 mm
Outside diameterD440 mm
WidthB85 mm
Shoulder diameter inner ringd 1≈ 316 mm
Shoulder diameter outer ring/ inner diameter housing washerD 1≈ 364 mm
Distance pressure point(s)a340 mm
Chamfer dimension inner ringr 1,2min. 4 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight62.0 kg
eClass code23-05-08-05
UNSPSC code31171531
Performance3 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating663.0 kN
Basic static load rating1220.0 kN
Limiting speed2400.0 r/min
Properties14 parameters
Properties
ParameterSymbolValue
Contact typeFour-point contact
Number of rows1
Locating feature, bearing outer ringWithout
Ring typeTwo-piece inner ring and one-piece outer ring
CageMachined brass
Matched arrangementNo
Universal matching bearingNo
Axial internal clearanceNSTD
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product229.0 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 QJ 1248 MA/344524
Document matching
Exact designation, assembly scope, revision and units must agree.

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