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SKF / Angular contact ball bearings

SKF 3308 DTN9

Double row angular contact ball bearing with two-piece inner ring technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
40 mm
Outside diameterD
90 mm
WidthB
36.5 mm
Dynamic load ratingC
68.9 kN
Static load ratingC0
57 kN
Limiting speednG
7000 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 specifications14 parameters
Core specifications
ParameterSymbolValue
Variant / constructionAngular contact ball bearings
Bore diameterd40 mm
Outside diameterD90 mm
WidthB36.5 mm
Basic dynamic load ratingC68.9 kN
Basic static load ratingC057 kN
Fatigue load limitPu2.45 kN
Reference speednref8000 r/min
Limiting speednG7000 r/min
Mass≈m1.04 kg
SealingWithout
CageNon-metallic
Bearing materialBearing steel
LubricantNone
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter40.0 mm
Outside diameter90.0 mm
Width36.5 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/double-row-angular-contact-ball-bearings
Structure group IDBA2_001
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions3 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Abutment diameter shaftd amin. 49 mm
Abutment diameter housingD amax. 81 mm
Fillet radiusr amax. 1.5 mm
Engineering — Calculation data11 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC68.9 kN
Basic static load ratingC 057 kN
Fatigue load limitP u2.45 kN
Reference speed8000 r/min
Limiting speed7000 r/min
Calculation factork r0.1
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 diameterd40 mm
Outside diameterD90 mm
WidthB36.5 mm
Shoulder diameter inner ring for two-piece inner ringd 1≈ 59.4 mm
Shoulder diameter outer ringD 1≈ 77.8 mm
Chamfer dimension inner ring for two-piece inner ringr 1,2min. 1.5 mm
Distance pressure point(s)a84 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight1.04 kg
eClass code23-05-08-03
UNSPSC code31171531
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating68.9 kN
Basic static load rating57.0 kN
Reference speed8000.0 r/min
Limiting speed7000.0 r/min
Properties15 parameters
Properties
ParameterSymbolValue
Contact typeNormal contact (two-point contact)
Number of rows2
Locating feature, bearing outer ringWithout
Ring typeTwo-piece inner ring and one-piece outer ring
CageNon-metallic
Arrangement of contact angle (double-row bearing)Back-to-back (O)
Matched arrangementNo
Universal matching bearingNo
Axial internal clearanceCN
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product3.8 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF 3308 DTN9
Document matching
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