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SKF / Super-precision cylindrical roller bearings

SKF NN 3020 KTN9/UPW33

Super-precision double row cylindrical roller bearing with tapered bore and lubrication feature technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
100 mm
Outside diameterD
150 mm
WidthB
37 mm
Dynamic load ratingC
151 kN
Static load ratingC0
250 kN
Mass≈m
2.2 kg

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 specifications13 parameters
Core specifications
ParameterSymbolValue
Variant / constructionSuper-precision cylindrical roller bearings
Bore diameterd100 mm
Outside diameterD150 mm
WidthB37 mm
Basic dynamic load ratingC151 kN
Basic static load ratingC0250 kN
Fatigue load limitPu29 kN
Mass≈m2.2 kg
Internal clearanceC1
SealingWithout
CageNon-metallic
Bearing materialBearing steel
LubricantNone
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter100.0 mm
Outside diameter150.0 mm
Width37.0 mm
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categorySuper-precision cylindrical roller bearings
Official taxonomy path/products/super-precision-bearings/cylindrical-roller-bearings
Structure group IDBC2_010
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions5 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Abutment diameter shaftd amin. 108 mm
Abutment diameter housingD amin. 139 mm
Abutment diameter housingD amax. 142 mm
Fillet radiusr amax. 1.5 mm
Oil nozzle position (not for variants with TNHA cage)d n135.2 mm
Engineering — Calculation data7 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC151 kN
Basic static load ratingC 0250 kN
Fatigue load limitP u29 kN
Attainable speed for grease lubrication5600 r/min
Attainable speed for oil-air lubrication6300 r/min
Reference grease quantityG ref11.9 cm³
Static radial stiffness (guideline value)2350 N/µm
Engineering — Dimensions10 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd100 mm
Outside diameterD150 mm
WidthB37 mm
Shoulder diameter inner ring (NN design)d 1119.4 mm
Raceway diameter outer ring (NN design)E137 mm
Width annular lubrication groove at outer ringb5.5 mm
Diameter lubrication hole (outer ring)K3 mm
Chamfer dimension outer ringr 1,2min. 1.5 mm
Chamfer dimension inner ring (bearing with tapered bore)r 3,4min. 1 mm
Permissible axial displacement from the normal position of one bearing ring relative to the other (all)smax. 2 mm
Engineering — Engineering specifications1 parameter
Engineering — Engineering specifications
ParameterSymbolValue
Bore typeTapered 1:12
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight2.2 kg
eClass code23-05-09-01
UNSPSC code31171505
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating151.0 kN
Basic static load rating250.0 kN
Attainable speed for grease lubrication5600.0 r/min
Attainable speed for oil-air lubrication6300.0 r/min
Properties16 parameters
Properties
ParameterSymbolValue
Bearing partComplete bearing
Number of rows2
Bore typeTapered 1:12
CageNon-metallic
DesignNN
Number of flanges, outer ring0
Number of flanges, inner ring3
Loose flangeNone
Radial internal clearanceC1
Tolerance classClass UP (UP)
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureAnnular groove and lubrication holes
Indicative carbon footprint for new product8.1 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF NN 3020 KTN9/UPW33
Document matching
Exact designation, assembly scope, revision and units must agree.

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