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SKF / Tapered roller bearings

SKF 31309/CL7CDFG40

Matched tapered roller bearings arranged face-to-face technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
45 mm
Outside diameterD
100 mm
WidthB
54.5 mm
Dynamic load ratingC
194 kN
Static load ratingC0
204 kN
Limiting speednG
6700 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 / constructionTapered roller bearings
Bore diameterd45 mm
Outside diameterD100 mm
WidthB54.5 mm
Basic dynamic load ratingC194 kN
Basic static load ratingC0204 kN
Fatigue load limitPu24.5 kN
Reference speednref4000 r/min
Limiting speednG6700 r/min
Mass≈m1.98 kg
SealingWithout
CageSheet metal
LubricantNone
Dimensions6 parameters
Dimensions
ParameterSymbolValue
Bore diameter45.0 mm
Outside diameter100.0 mm
Width, total54.5 mm
Width, inner ring50.0 mm
Width, outer ring54.5 mm
Contact angle28.8 °
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryTapered roller bearings
Official taxonomy path/products/rolling-bearings/roller-bearings/tapered-roller-bearings/matched-tapered-roller-bearings
Structure group IDBT2_010
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions6 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of shaft abutmentd amax. 57 mm
Diameter of housing abutmentD amin. 79 mm
Diameter of housing abutmentD amax. 92 mm
Minimum width of space required in housing on large side faceC amin. 4 mm
Radius of filletr amax. 2 mm
Radius of filletr cmax. 0.6 mm
Engineering — Calculation data10 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC194 kN
Basic static load ratingC 0204 kN
Fatigue load limitP u24.5 kN
Reference speed4000 r/min
Limiting speed6700 r/min
Limiting valuee0.83
Calculation factorY 10.81
Calculation factorY 21.2
Calculation factorY 00.8
Engineering — Dimensions8 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd45 mm
Outside diameterD100 mm
Total widthT54.5 mm
Width of inner rings2B50 mm
Width of lubrication grooveb10.5 mm
Diameter of lubrication holeK8.5 mm
Chamfer dimensionr 3,4min. 1.5 mm
Chamfer dimensionr 5min. 0.6 mm
Logistics2 parameters
Logistics
ParameterSymbolValue
Product net weight1.98 kg
eClass code23-05-09-10
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating194.0 kN
Basic static load rating204.0 kN
Reference speed4000.0 r/min
Limiting speed6700.0 r/min
SKF performance classSKF Explorer
Properties12 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Number of rows2
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageSheet metal
Matched arrangementFace-to-face (X)
Number of bearings in matched set2
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWith
Indicative carbon footprint for new product7.3 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 31309/CL7CDFG40
Document matching
Exact designation, assembly scope, revision and units must agree.

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