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SKF / Angular contact ball bearings

SKF QJ 313 MA

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

Technical data available
Bore diameterd
65 mm
Outside diameterD
140 mm
WidthB
33 mm
Dynamic load ratingC
176 kN
Static load ratingC0
156 kN
Limiting speednG
8500 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 diameterd65 mm
Outside diameterD140 mm
WidthB33 mm
Basic dynamic load ratingC176 kN
Basic static load ratingC0156 kN
Fatigue load limitPu6.55 kN
Limiting speednG8500 r/min
Mass≈m2.58 kg
SealingWithout
CageMachined brass
Bearing materialBearing steel
LubricantNone
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter65.0 mm
Outside diameter140.0 mm
Width33.0 mm
Contact angle35.0 °
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
RemanufacturableNo
Engineering — Abutment dimensions3 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Abutment diameter shaftd amin. 77 mm
Abutment diameter housingD amax. 128 mm
Fillet radiusr amax. 2 mm
Engineering — Calculation data11 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC176 kN
Basic static load ratingC 0156 kN
Fatigue load limitP u6.55 kN
Limiting speed8500 r/min
Calculation factorA0.07
Limiting valuee0.95
Calculation factorX0.6
Calculation factorY 00.58
Calculation factorY 10.66
Calculation factorY 21.1
Engineering — Dimensions7 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd65 mm
Outside diameterD140 mm
WidthB33 mm
Shoulder diameter inner ringd 1≈ 82.5 mm
Shoulder diameter outer ring/ inner diameter housing washerD 1≈ 115 mm
Distance pressure point(s)a72 mm
Chamfer dimension inner ringr 1,2min. 2.1 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight2.58 kg
eClass code23-05-08-05
UNSPSC code31171538
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating176.0 kN
Basic static load rating156.0 kN
Limiting speed8500.0 r/min
SKF performance classSKF Explorer
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 clearanceCN
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product9.6 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF QJ 313 MA
Document matching
Exact designation, assembly scope, revision and units must agree.

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