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SKF / Cylindrical roller bearings

SKF NNC 4844 CV

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

Technical data available
Bore diameterd
220 mm
Outside diameterD
270 mm
WidthB
50 mm
Dynamic load ratingC
352 kN
Static load ratingC0
865 kN
Limiting speednG
1200 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 diameterd220 mm
Outside diameterD270 mm
WidthB50 mm
Basic dynamic load ratingC352 kN
Basic static load ratingC0865 kN
Fatigue load limitPu85 kN
Reference speednref1000 r/min
Limiting speednG1200 r/min
Mass≈m5.9 kg
Internal clearanceCN
SealingWithout
CageWithout
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter220.0 mm
Outside diameter270.0 mm
Width50.0 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 dimensions4 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Abutment diameter shaftd amin. 227 mm
Abutment diameter shaftd as233 mm
Abutment diameter housingD amax. 263 mm
Fillet radiusr amax. 1.5 mm
Engineering — Calculation data6 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC352 kN
Basic static load ratingC 0865 kN
Fatigue load limitP u85 kN
Reference speed1000 r/min
Limiting speed1200 r/min
Minimum load factork r0.2
Engineering — Dimensions8 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd220 mm
Outside diameterD270 mm
WidthB50 mm
Shoulder diameter inner ringd 1≈ 241 mm
Shoulder diameter outer ringD 1≈ 250.5 mm
Width annular lubrication groove outer ringb 17 mm
Diameter lubrication hole (outer ring)K4 mm
Chamfer dimension (open bearings)r 1,2min. 1.5 mm
Logistics2 parameters
Logistics
ParameterSymbolValue
Product net weight5.9 kg
UNSPSC code31171505
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating352.0 kN
Basic static load rating865.0 kN
Reference speed1000.0 r/min
Limiting speed1200.0 r/min
Properties18 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Axial displacement capabilityNone
Number of rows2
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageWithout
Number of flanges, outer ring0
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 product21.8 kg CO 2 e
Indicative carbon footprint for remanufactured product7.3 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NNC 4844 CV
Document matching
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