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SKF / Tapered roller bearings

SKF 31328 X

Single row tapered roller bearing technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
140 mm
Outside diameterD
300 mm
Dynamic load ratingC
693 kN
Static load ratingC0
900 kN
Limiting speednG
2200 r/min
Mass≈m
22.6 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 specifications12 parameters
Core specifications
ParameterSymbolValue
Variant / constructionTapered roller bearings
Bore diameterd140 mm
Outside diameterD300 mm
Basic dynamic load ratingC693 kN
Basic static load ratingC0900 kN
Fatigue load limitPu90 kN
Reference speednref1500 r/min
Limiting speednG2200 r/min
Mass≈m22.6 kg
SealingWithout
CageSheet metal
LubricantNone
Dimensions6 parameters
Dimensions
ParameterSymbolValue
Bore diameter140.0 mm
Outside diameter300.0 mm
Width, total77.0 mm
Width, inner ring70.0 mm
Width, outer ring47.0 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/single-row-tapered-roller-bearings
Structure group IDBT1_001_101
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions9 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of shaft abutmentd amax. 169 mm
Diameter of shaft abutmentd bmin. 159.5 mm
Diameter of housing abutmentD amin. 235 mm
Diameter of housing abutmentD amax. 284 mm
Diameter of housing abutmentD bmin. 280 mm
Minimum width of space required in housing on large side faceC amin. 9 mm
Minimum width of space required in housing on small side faceC bmin. 30 mm
Radius of shaft filletr amax. 5 mm
Radius of housing filletr bmax. 4 mm
Engineering — Calculation data8 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC693 kN
Basic static load ratingC 0900 kN
Fatigue load limitP u90 kN
Reference speed1500 r/min
Limiting speed2200 r/min
Limiting valuee0.83
Calculation factorY0.72
Calculation factorY 00.4
Engineering — Dimensions9 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd140 mm
Outside diameterD300 mm
Bearing width, totalT77 mm
Shoulder diameter of inner ringd 1≈ 220.275 mm
Width of inner ringB70 mm
Width of outer ringC47 mm
Chamfer dimension of inner ringr 1,2min. 5 mm
Chamfer dimension of outer ringr 3,4min. 4 mm
Distance side face to pressure pointa90.1 mm
Engineering — Engineering specifications1 parameter
Engineering — Engineering specifications
ParameterSymbolValue
Dimension series7GB
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight22.6 kg
eClass code23-05-09-10
UNSPSC code31171516
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating693.0 kN
Basic static load rating900.0 kN
Reference speed1500.0 r/min
Limiting speed2200.0 r/min
Properties13 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Number of rows1
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageSheet metal
Arrangement of contact angle (double-row bearing)Not applicable
Matched arrangementNo
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Unit systemMetric
Indicative carbon footprint for new product83.6 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 31328 X
Document matching
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