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SKF / Cylindrical roller bearings

SKF NCF 2938 CV

Single row full complement cylindrical roller bearing, ncf design technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
190 mm
Outside diameterD
260 mm
WidthB
42 mm
Dynamic load ratingC
440 kN
Static load ratingC0
780 kN
Limiting speednG
1400 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 specifications14 parameters
Core specifications
ParameterSymbolValue
Variant / constructionCylindrical roller bearings
Bore diameterd190 mm
Outside diameterD260 mm
WidthB42 mm
Basic dynamic load ratingC440 kN
Basic static load ratingC0780 kN
Fatigue load limitPu81.5 kN
Reference speednref1100 r/min
Limiting speednG1400 r/min
Mass≈m6.36 kg
Internal clearanceCN
SealingWithout
CageWithout
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter190.0 mm
Outside diameter260.0 mm
Width42.0 mm
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryCylindrical roller bearings
Official taxonomy path/products/rolling-bearings/roller-bearings/cylindrical-roller-bearings/single-row-full-complement-cylindrical-roller-bearings
Structure group IDBC1_004
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions6 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Abutment diameter shaftd amin. 199 mm
Abutment diameter shaftd as208 mm
Abutment diameter housingD amax. 250 mm
Abutment diameter housingD bmax. 252 mm
Fillet radiusr amax. 2 mm
Fillet radiusr bmax. 1 mm
Engineering — Calculation data8 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC440 kN
Basic static load ratingC 0780 kN
Fatigue load limitP u81.5 kN
Reference speed1100 r/min
Limiting speed1400 r/min
Calculation factork r0.2
Limiting valuee0.3
Calculation factorY0.4
Engineering — Dimensions9 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd190 mm
Outside diameterD260 mm
WidthB42 mm
Shoulder diameter inner ringd 1≈ 212 mm
Shoulder diameter outer ringD 1≈ 236 mm
Raceway diameter outer ringE244 mm
Permissible axial displacement from the normal position of one bearing ring relative to the othersmax. 2 mm
Chamfer dimensionr 1,2min. 2 mm
Chamfer dimensionr 3,4min. 1.1 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight6.36 kg
eClass code23-05-09-01
UNSPSC code31171505
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating440.0 kN
Basic static load rating780.0 kN
Reference speed1100.0 r/min
Limiting speed1400.0 r/min
Properties17 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Axial displacement capabilityIn one direction
Number of rows1
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageWithout
DesignNon-separable
Number of flanges, outer ring1
Number of flanges, inner ring2
Loose flangeNone
Radial internal clearanceCN
Tolerance classNormal
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product23.5 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NCF 2938 CV
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