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SKF / Cylindrical roller bearings

SKF NU 20/630 ECMA

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

Technical data available
Bore diameterd
630 mm
Outside diameterD
920 mm
WidthB
170 mm
Dynamic load ratingC
4730 kN
Static load ratingC0
9500 kN
Limiting speednG
850 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 diameterd630 mm
Outside diameterD920 mm
WidthB170 mm
Basic dynamic load ratingC4730 kN
Basic static load ratingC09500 kN
Fatigue load limitPu670 kN
Reference speednref560 r/min
Limiting speednG850 r/min
Mass≈m401 kg
Internal clearanceCN
SealingWithout
CageMachined brass
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter630.0 mm
Outside diameter920.0 mm
Width170.0 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 dimensions5 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of spacer sleeved amin. 658 mm
Diameter of spacer sleeved amax. 690 mm
Diameter of shaft abutmentd bmin. 705 mm
Diameter of housing abutmentD amax. 892 mm
Radius of filletr amax. 6 mm
Engineering — Calculation data8 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC4730 kN
Basic static load ratingC 09500 kN
Fatigue load limitP u670 kN
Reference speed560 r/min
Limiting speed850 r/min
Minimum load factork r0.14
Limiting valuee0.3
Calculation factorY0
Engineering — Dimensions7 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd630 mm
Outside diameterD920 mm
WidthB170 mm
Shoulder diameter of outer ringD 1≈ 832 mm
Raceway diameter of inner ringF699 mm
Chamfer dimensionr 1,2min. 7.5 mm
Permissible axial displacementsmax. 8.7 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight401.0 kg
eClass code23-05-09-01
UNSPSC code31171505
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating4730.0 kN
Basic static load rating9500.0 kN
Reference speed560.0 r/min
Limiting speed850.0 r/min
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 product1483.0 kg CO 2 e
Indicative carbon footprint for remanufactured product493.0 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NU 20/630 ECMA
Document matching
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