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SKF / Self-aligning ball bearings

SKF 1304 ETN9/C3

Self-aligning ball bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
20 mm
Outside diameterD
52 mm
WidthB
15 mm
Dynamic load ratingC
14.3 kN
Static load ratingC0
4 kN
Limiting speednG
18000 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 / constructionSelf-aligning ball bearings
Bore diameterd20 mm
Outside diameterD52 mm
WidthB15 mm
Basic dynamic load ratingC14.3 kN
Basic static load ratingC04 kN
Reference speednref26000 r/min
Limiting speednG18000 r/min
Mass≈m0.16 kg
Internal clearanceC3
SealingWithout
CageNon-metallic
Bearing materialBearing steel
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter20.0 mm
Outside diameter52.0 mm
Width15.0 mm
Product identity4 parameters
Product identity
ParameterSymbolValue
Official product categorySelf-aligning ball bearings
Official taxonomy path/products/rolling-bearings/ball-bearings/self-aligning-ball-bearings
Available from SKFYes
RemanufacturableNo
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.16 kg
eClass code23-05-08-06
UNSPSC code31171532
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating14.3 kN
Basic static load rating4.0 kN
Reference speed26000.0 r/min
Limiting speed18000.0 r/min
Properties13 parameters
Properties
ParameterSymbolValue
Retaining feature, inner ringNone
Locating feature, bearing outer ringWithout
Number of rows2
Bore typeCylindrical
CageNon-metallic
Radial internal clearanceC3
Tolerance classNormal
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product0.59 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF 1304 ETN9/C3
Document matching
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