99,016 bearing records · search, filter and compare

SKF / Tapered roller bearings

SKF 31305/DF

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

Technical data available
Bore diameterd
25 mm
Outside diameterD
62 mm
WidthB
36.5 mm
Dynamic load ratingC
79.9 kN
Static load ratingC0
80 kN
Limiting speednG
11000 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 diameterd25 mm
Outside diameterD62 mm
WidthB36.5 mm
Basic dynamic load ratingC79.9 kN
Basic static load ratingC080 kN
Fatigue load limitPu8.65 kN
Reference speednref6700 r/min
Limiting speednG11000 r/min
Mass≈m0.56 kg
SealingWithout
CageSheet metal
LubricantNone
Dimensions6 parameters
Dimensions
ParameterSymbolValue
Bore diameter25.0 mm
Outside diameter62.0 mm
Width, total36.5 mm
Width, inner ring34.0 mm
Width, outer ring36.5 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. 34 mm
Diameter of housing abutmentD amin. 47 mm
Diameter of housing abutmentD amax. 55 mm
Minimum width of space required in housing on large side faceC amin. 2 mm
Radius of filletr amax. 1.5 mm
Radius of filletr cmax. 0.6 mm
Engineering — Calculation data10 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC79.9 kN
Basic static load ratingC 080 kN
Fatigue load limitP u8.65 kN
Reference speed6700 r/min
Limiting speed11000 r/min
Limiting valuee0.83
Calculation factorY 10.81
Calculation factorY 21.2
Calculation factorY 00.8
Engineering — Dimensions8 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd25 mm
Outside diameterD62 mm
Total widthT36.5 mm
Width of inner rings2B34 mm
Width of lubrication grooveb5 mm
Diameter of lubrication holeK4 mm
Chamfer dimensionr 3,4min. 1.5 mm
Chamfer dimensionr 5min. 0.6 mm
Logistics2 parameters
Logistics
ParameterSymbolValue
Product net weight0.56 kg
eClass code23-05-09-10
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating79.9 kN
Basic static load rating80.0 kN
Reference speed6700.0 r/min
Limiting speed11000.0 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 product2.1 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 31305/DF
Document matching
Exact designation, assembly scope, revision and units must agree.

No verified redistributable CAD or manufacturer PDF is registered for this exact model. A catalogue image is not a dimensioned drawing. Missing technical files are not generated or replaced with unrelated models.

Look up another model or check drawing requirements →

Search the consolidated catalogue

Find, filter and compare bearing model data in one place.

Open model search