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SKF / Cylindrical roller bearings

SKF NU 234 ECM

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

Technical data available
Bore diameterd
170 mm
Outside diameterD
310 mm
WidthB
52 mm
Dynamic load ratingC
695 kN
Static load ratingC0
815 kN
Limiting speednG
2400 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 diameterd170 mm
Outside diameterD310 mm
WidthB52 mm
Basic dynamic load ratingC695 kN
Basic static load ratingC0815 kN
Fatigue load limitPu85 kN
Reference speednref2200 r/min
Limiting speednG2400 r/min
Mass≈m17.9 kg
Internal clearanceCN
SealingWithout
CageMachined brass
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter170.0 mm
Outside diameter310.0 mm
Width52.0 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
RemanufacturableYes
Engineering — Abutment dimensions6 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of spacer sleeved amin. 188 mm
Diameter of spacer sleeved amax. 203 mm
Diameter of shaft abutmentd bmin. 210 mm
Diameter of housing abutmentD amax. 292.4 mm
Radius of filletr amax. 3 mm
Radius of filletr bmax. 3 mm
Engineering — Associated products1 parameter
Engineering — Associated products
ParameterSymbolValue
Angle ringHJ 234 EC
Engineering — Calculation data9 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC695 kN
Basic static load ratingC 0815 kN
Fatigue load limitP u85 kN
Reference speed2200 r/min
Limiting speed2400 r/min
Minimum load factork r0.15
Limiting valuee0.2
Calculation factorY0.6
Engineering — Dimensions8 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd170 mm
Outside diameterD310 mm
WidthB52 mm
Shoulder diameter of outer ringD 1≈ 267.38 mm
Raceway diameter of inner ringF207 mm
Chamfer dimensionr 1,2min. 4 mm
Chamfer dimensionr 3,4min. 4 mm
Permissible axial displacementsmax. 2.9 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight17.9 kg
eClass code23-05-09-01
UNSPSC code31171505
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating695.0 kN
Basic static load rating815.0 kN
Reference speed2200.0 r/min
Limiting speed2400.0 r/min
SKF performance classSKF Explorer
Properties18 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Axial displacement capabilityIn both directions
Number of rows1
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageMachined brass
Number of flanges, outer ring2
Number of flanges, inner ring0
Loose flangeNone
Radial internal clearanceCN
Tolerance classNormal
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Candidate for remanufacturingYes
Indicative carbon footprint for new product66.0 kg CO 2 e
Indicative carbon footprint for remanufactured product22.0 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NU 234 ECM
Document matching
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