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SKF / Tapered roller bearings

SKF 31307/DF

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

Technical data available
Bore diameterd
35 mm
Outside diameterD
80 mm
WidthB
45.5 mm
Dynamic load ratingC
129 kN
Static load ratingC0
134 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 / constructionTapered roller bearings
Bore diameterd35 mm
Outside diameterD80 mm
WidthB45.5 mm
Basic dynamic load ratingC129 kN
Basic static load ratingC0134 kN
Fatigue load limitPu15.6 kN
Reference speednref5000 r/min
Limiting speednG8500 r/min
Mass≈m1.1 kg
SealingWithout
CageSheet metal
LubricantNone
Dimensions6 parameters
Dimensions
ParameterSymbolValue
Bore diameter35.0 mm
Outside diameter80.0 mm
Width, total45.5 mm
Width, inner ring42.0 mm
Width, outer ring45.5 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. 45 mm
Diameter of housing abutmentD amin. 62 mm
Diameter of housing abutmentD amax. 72.5 mm
Minimum width of space required in housing on large side faceC amin. 3 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 ratingC129 kN
Basic static load ratingC 0134 kN
Fatigue load limitP u15.6 kN
Reference speed5000 r/min
Limiting speed8500 r/min
Limiting valuee0.83
Calculation factorY 10.81
Calculation factorY 21.2
Calculation factorY 00.8
Engineering — Dimensions8 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd35 mm
Outside diameterD80 mm
Total widthT45.5 mm
Width of inner rings2B42 mm
Width of lubrication grooveb8 mm
Diameter of lubrication holeK6 mm
Chamfer dimensionr 3,4min. 1.5 mm
Chamfer dimensionr 5min. 0.6 mm
Logistics2 parameters
Logistics
ParameterSymbolValue
Product net weight1.1 kg
eClass code23-05-09-10
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating129.0 kN
Basic static load rating134.0 kN
Reference speed5000.0 r/min
Limiting speed8500.0 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 product4.1 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF 31307/DF
Document matching
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