99,016 bearing records · search, filter and compare

SKF / Cylindrical roller bearings

SKF NU 20/500 ECMA

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

Technical data available
Bore diameterd
500 mm
Outside diameterD
720 mm
WidthB
128 mm
Dynamic load ratingC
2920 kN
Static load ratingC0
5850 kN
Limiting speednG
1100 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 diameterd500 mm
Outside diameterD720 mm
WidthB128 mm
Basic dynamic load ratingC2920 kN
Basic static load ratingC05850 kN
Fatigue load limitPu440 kN
Reference speednref750 r/min
Limiting speednG1100 r/min
Mass≈m181 kg
Internal clearanceCN
SealingWithout
CageMachined brass
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter500.0 mm
Outside diameter720.0 mm
Width128.0 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. 523 mm
Diameter of spacer sleeved amax. 549 mm
Diameter of shaft abutmentd bmin. 558 mm
Diameter of housing abutmentD amax. 697 mm
Radius of filletr amax. 5 mm
Engineering — Calculation data8 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC2920 kN
Basic static load ratingC 05850 kN
Fatigue load limitP u440 kN
Reference speed750 r/min
Limiting speed1100 r/min
Minimum load factork r0.14
Limiting valuee0.3
Calculation factorY0
Engineering — Dimensions7 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd500 mm
Outside diameterD720 mm
WidthB128 mm
Shoulder diameter of outer ringD 1≈ 649 mm
Raceway diameter of inner ringF553 mm
Chamfer dimensionr 1,2min. 6 mm
Permissible axial displacementsmax. 12.7 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight181.0 kg
eClass code23-05-09-01
UNSPSC code31171505
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating2920.0 kN
Basic static load rating5850.0 kN
Reference speed750.0 r/min
Limiting speed1100.0 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 product672.0 kg CO 2 e
Indicative carbon footprint for remanufactured product223.0 kg CO 2 e

Technical documents & data sheet

This product page is a BearingScope catalogue reference, not a manufacturer-certified drawing. Preserve the full brand and designation when comparing files.

Record identity
SKF NU 20/500 ECMA
Document matching
Exact designation, assembly scope, revision and units must agree.

No verified redistributable CAD or manufacturer PDF is registered for this exact model. A catalogue image is not a dimensioned drawing. Missing technical files are not generated or replaced with unrelated models.

Look up another model or check drawing requirements →

Search the consolidated catalogue

Find, filter and compare bearing model data in one place.

Open model search