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SKF / Cylindrical roller bearings

SKF NNCF 4956 CV

Double row full complement cylindrical roller bearing, nncf design, with relubrication feature technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
280 mm
Outside diameterD
380 mm
WidthB
100 mm
Dynamic load ratingC
1210 kN
Static load ratingC0
2700 kN
Limiting speednG
900 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 diameterd280 mm
Outside diameterD380 mm
WidthB100 mm
Basic dynamic load ratingC1210 kN
Basic static load ratingC02700 kN
Fatigue load limitPu255 kN
Reference speednref700 r/min
Limiting speednG900 r/min
Mass≈m34 kg
Internal clearanceCN
SealingWithout
CageWithout
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter280.0 mm
Outside diameter380.0 mm
Width100.0 mm
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryCylindrical roller bearings
Official taxonomy path/products/rolling-bearings/roller-bearings/cylindrical-roller-bearings/double-row-full-complement-cylindrical-roller-bearings
Structure group IDBC2_002
Available from SKFYes
RemanufacturableYes
Engineering — Abutment dimensions5 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Abutment diameter shaftd amin. 293 mm
Abutment diameter shaftd as312 mm
Abutment diameter housingD amax. 368 mm
Fillet radiusr amax. 2 mm
Fillet radiusr bmax. 2 mm
Engineering — Calculation data6 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC1210 kN
Basic static load ratingC 02700 kN
Fatigue load limitP u255 kN
Reference speed700 r/min
Limiting speed900 r/min
Minimum load factork r0.25
Engineering — Dimensions10 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd280 mm
Outside diameterD380 mm
WidthB100 mm
Shoulder diameter inner ringd 1≈ 317 mm
Shoulder diameter outer ringD 1≈ 343 mm
Width annular lubrication groove outer ringb 19.4 mm
Diameter lubrication hole (outer ring)K5 mm
Permissible axial displacement from the normal position of one bearing ring relative to the othersmax. 6 mm
Chamfer dimension (open bearings)r 1,2min. 2.1 mm
Chamfer dimensionr 3,4min. 2.1 mm
Logistics2 parameters
Logistics
ParameterSymbolValue
Product net weight34.0 kg
UNSPSC code31171505
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating1210.0 kN
Basic static load rating2700.0 kN
Reference speed700.0 r/min
Limiting speed900.0 r/min
Properties18 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Axial displacement capabilityIn one direction
Number of rows2
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageWithout
Number of flanges, outer ring1
Number of flanges, inner ring3
Loose flangeNone
Radial internal clearanceCN
Tolerance classNormal
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWith
Candidate for remanufacturingYes
Indicative carbon footprint for new product126.0 kg CO 2 e
Indicative carbon footprint for remanufactured product41.8 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NNCF 4956 CV
Document matching
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