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SKF / Cylindrical roller bearings

SKF NU 31/530 ECMA/HB1

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

Technical data available
Bore diameterd
530 mm
Outside diameterD
870 mm
WidthB
272 mm
Dynamic load ratingC
7480 kN
Static load ratingC0
14600 kN
Limiting speednG
950 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 diameterd530 mm
Outside diameterD870 mm
WidthB272 mm
Basic dynamic load ratingC7480 kN
Basic static load ratingC014600 kN
Fatigue load limitPu1040 kN
Reference speednref560 r/min
Limiting speednG950 r/min
Mass≈m660 kg
Internal clearanceCN
SealingWithout
CageMachined brass
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter530.0 mm
Outside diameter870.0 mm
Width272.0 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. 562 mm
Diameter of spacer sleeved amax. 605 mm
Diameter of shaft abutmentd bmin. 617 mm
Diameter of housing abutmentD amax. 838 mm
Radius of filletr amax. 6 mm
Engineering — Calculation data8 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC7480 kN
Basic static load ratingC 014600 kN
Fatigue load limitP u1040 kN
Reference speed560 r/min
Limiting speed950 r/min
Minimum load factork r0.21
Limiting valuee0.3
Calculation factorY0
Engineering — Dimensions7 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd530 mm
Outside diameterD870 mm
WidthB272 mm
Shoulder diameter of outer ringD 1≈ 764 mm
Raceway diameter of inner ringF612 mm
Chamfer dimensionr 1,2min. 7.5 mm
Permissible axial displacementsmax. 17.2 mm
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight660.0 kg
eClass code23-05-09-01
UNSPSC code31171505
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating7480.0 kN
Basic static load rating14600.0 kN
Reference speed560.0 r/min
Limiting speed950.0 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 product2442.0 kg CO 2 e
Indicative carbon footprint for remanufactured product812.0 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NU 31/530 ECMA/HB1
Document matching
Exact designation, assembly scope, revision and units must agree.

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