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SKF / Tapered roller bearings

SKF 31318T103/DB31

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

Technical data available
Bore diameterd
90 mm
Outside diameterD
190 mm
Dynamic load ratingC
486 kN
Static load ratingC0
630 kN
Limiting speednG
3400 r/min
Mass≈m
11.8 kg

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 specifications11 parameters
Core specifications
ParameterSymbolValue
Variant / constructionTapered roller bearings
Bore diameterd90 mm
Outside diameterD190 mm
Basic dynamic load ratingC486 kN
Basic static load ratingC0630 kN
Reference speednref1900 r/min
Limiting speednG3400 r/min
Mass≈m11.8 kg
SealingWithout
CageSheet metal
LubricantNone
Dimensions6 parameters
Dimensions
ParameterSymbolValue
Bore diameter90.0 mm
Outside diameter190.0 mm
Width, total103.0 mm
Width, inner ring103.0 mm
Width, outer ring70.0 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_011
Available from SKFYes
RemanufacturableNo
Logistics2 parameters
Logistics
ParameterSymbolValue
Product net weight11.8 kg
eClass code23-05-09-10
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating486.0 kN
Basic static load rating630.0 kN
Reference speed1900.0 r/min
Limiting speed3400.0 r/min
Properties12 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Number of rows2
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageSheet metal
Matched arrangementBack-to-back (O)
Number of bearings in matched set2
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWith
Indicative carbon footprint for new product43.7 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 31318T103/DB31
Document matching
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