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SKF / Super-precision angular contact ball bearings

SKF 71940 CD/HCP4ATBTA

Matched set of three super-precision, high-capacity, d design, single row angular contact ball bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
200 mm
Outside diameterD
280 mm
WidthB
114 mm
Dynamic load ratingC
449 kN
Static load ratingC0
800 kN
Mass≈m
15.1 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 specifications11 parameters
Core specifications
ParameterSymbolValue
Variant / constructionSuper-precision angular contact ball bearings
Bore diameterd200 mm
Outside diameterD280 mm
WidthB114 mm
Basic dynamic load ratingC449 kN
Basic static load ratingC0800 kN
Fatigue load limitPu16 kN
Mass≈m15.1 kg
SealingWithout
Bearing materialHybrid (ceramic balls)
LubricantNone
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter200.0 mm
Outside diameter280.0 mm
Width114.0 mm
Contact angle15.0 °
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categorySuper-precision angular contact ball bearings
Official taxonomy path/products/super-precision-bearings/angular-contact-ball-bearings
Structure group IDBA1_010
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions5 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of shaft abutmentd amin. 211 mm
Diameter of housing abutmentD bmax. 275 mm
Radius of filletr amax. 2 mm
Radius of filletr bmax. 1 mm
Position of oil nozzled n231.4 mm
Engineering — Calculation data9 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC449 kN
Basic static load ratingC 0800 kN
Fatigue load limitP u16 kN
Attainable speedsRefer to catalogue data or contact SKF for the attainable speeds
Contact angleα15 °
Ball diameterD w25.4 mm
Number of rowsi3
Number of balls (per bearing)z26
Reference grease quantity (per bearing)G ref81 cm³
Engineering — Calculation data — Correction factors for preload calculation4 parameters
Engineering — Calculation data — Correction factors for preload calculation
ParameterSymbolValue
Correction factor dependent on bearing series and sizef1.2
Correction factor dependent on contact anglef 11
Correction factor, preload class Af 2A1
Correction factor for hybrid bearingsf HC1
Engineering — Calculation data — Preload and stiffness (back-to-back, face-to-face)3 parameters
Engineering — Calculation data — Preload and stiffness (back-to-back, face-to-face)
ParameterSymbolValue
Preload classA
PreloadG1080 N
Axial stiffness325 N/µm
Engineering — Dimensions6 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd200 mm
Outside diameterD280 mm
WidthB114 mm
Shoulder diameter of inner ring (large side face)d 1224.7 mm
Chamfer dimensionr 1,2min. 2.1 mm
Chamfer dimensionr 3,4min. 1 mm
Engineering — Engineering specifications1 parameter
Engineering — Engineering specifications
ParameterSymbolValue
Universal matching bearing(s)No
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight15.1 kg
eClass code23-05-08-03
UNSPSC code31171531
Performance3 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating449.0 kN
Basic static load rating800.0 kN
NoteRefer to catalogue data or contact SKF for the attainable speeds
Properties14 parameters
Properties
ParameterSymbolValue
Contact typeNormal contact (two-point contact)
Number of rows3
Ring typeOne-piece inner and outer rings
DesignHigh-capacity D
Universal matching bearingNo
Matched arrangement<>>
Number of bearings in matched set3
Matched condition (axial clearance/ preload)Extra light preload
Tolerance classP4A
Material, bearingHybrid (ceramic balls)
CoatingWithout
SealingWithout
LubricantNone
Indicative carbon footprint for new product55.7 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF 71940 CD/HCP4ATBTA
Document matching
Exact designation, assembly scope, revision and units must agree.

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