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SKF / Cylindrical roller bearings

SKF NUP 311 ECJ

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

Technical data available
Bore diameterd
55 mm
Outside diameterD
120 mm
WidthB
29 mm
Dynamic load ratingC
156 kN
Static load ratingC0
143 kN
Limiting speednG
7000 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 diameterd55 mm
Outside diameterD120 mm
WidthB29 mm
Basic dynamic load ratingC156 kN
Basic static load ratingC0143 kN
Fatigue load limitPu18.6 kN
Reference speednref6000 r/min
Limiting speednG7000 r/min
Mass≈m1.53 kg
Internal clearanceCN
SealingWithout
CageSheet metal
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter55.0 mm
Outside diameter120.0 mm
Width29.0 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-cylindrical-roller-bearings
Structure group IDBC1_001_101
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions4 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of spacer sleeved amin. 65 mm
Diameter of shaft abutmentd bmin. 80 mm
Diameter of housing abutmentD amax. 109.2 mm
Radius of filletr amax. 2 mm
Engineering — Calculation data9 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC156 kN
Basic static load ratingC 0143 kN
Fatigue load limitP u18.6 kN
Reference speed6000 r/min
Limiting speed7000 r/min
Minimum load factork r0.15
Limiting valuee0.2
Calculation factorY0.6
Engineering — Dimensions8 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd55 mm
Outside diameterD120 mm
WidthB29 mm
Shoulder diameter of inner ringd 1≈ 77.5 mm
Shoulder diameter of outer ringD 1≈ 100.3 mm
Raceway diameter of inner ringF70.5 mm
Chamfer dimensionr 1,2min. 2 mm
Chamfer dimension of loose flange ringr 3,4min. 2 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight1.53 kg
eClass code23-05-09-01
UNSPSC code31171505
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating156.0 kN
Basic static load rating143.0 kN
Reference speed6000.0 r/min
Limiting speed7000.0 r/min
SKF performance classSKF Explorer
Properties16 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Axial displacement capabilityNone
Number of rows1
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageSheet metal
Number of flanges, outer ring2
Number of flanges, inner ring1
Loose flangeInner ring loose flange
Radial internal clearanceCN
Tolerance classNormal
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product5.7 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NUP 311 ECJ
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