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SKF / Super-precision angular contact ball bearings

SKF 7226 CD/P4A

Super-precision, high-capacity, single row angular contact ball bearing technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
130 mm
Outside diameterD
230 mm
WidthB
40 mm
Dynamic load ratingC
216 kN
Static load ratingC0
224 kN
Mass≈m
6.34 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 diameterd130 mm
Outside diameterD230 mm
WidthB40 mm
Basic dynamic load ratingC216 kN
Basic static load ratingC0224 kN
Fatigue load limitPu6.95 kN
Mass≈m6.34 kg
SealingWithout
Bearing materialBearing steel
LubricantNone
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter130.0 mm
Outside diameter230.0 mm
Width40.0 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 dimensions7 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of shaft abutmentd amin. 144 mm
Diameter of shaft abutmentd bmin. 144 mm
Diameter of housing abutmentD amax. 216 mm
Diameter of housing abutmentD bmax. 223 mm
Radius of filletr amax. 2.5 mm
Radius of filletr bmax. 1 mm
Position of oil nozzled n170.7 mm
Engineering — Calculation data10 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC216 kN
Basic static load ratingC 0224 kN
Fatigue load limitP u6.95 kN
Attainable speed for grease lubrication6300 r/min
Attainable speed for oil-air lubrication9500 r/min
Contact angleα15 °
Ball diameterD w30.162 mm
Number of rowsi1
Number of balls (per bearing)z17
Reference grease quantity (per bearing)G ref72.4 cm³
Engineering — Calculation data — Correction factors for preload calculation7 parameters
Engineering — Calculation data — Correction factors for preload calculation
ParameterSymbolValue
Correction factor dependent on bearing series and sizef1.1
Correction factor dependent on contact anglef 11
Correction factor, preload class Af 2A1
Correction factor, preload class Bf 2B1
Correction factor, preload class Cf 2C1
Correction factor, preload class Df 2D1.1
Correction factor for hybrid bearingsf HC1
Engineering — Calculation data — Factors for equivalent bearing load calculation2 parameters
Engineering — Calculation data — Factors for equivalent bearing load calculation
ParameterSymbolValue
Calculation factor for equivalent loadsf 014.9
Additional factors for equivalent loadsRefer to Notes 1 and 2 below
Engineering — Calculation data — Preload and stiffness (back-to-back, face-to-face)8 parameters
Engineering — Calculation data — Preload and stiffness (back-to-back, face-to-face)
ParameterSymbolValue
Preload, class AG A810 N
Axial stiffnes for preload A (sets of two brgs back to back or face to face)155 N/µm
Preload, class BG B1620 N
Axial stiffness for preload B (sets of two brgs back-to-back or face-to-face)209 N/µm
Preload, class CG C3240 N
Axial stiffness for preload C (sets of two brgs back-to-back or face-to-face)291 N/µm
Preload, class DG D6480 N
Axial stiffness for preload D (sets of two brgs back-to-back or face-to-face)416 N/µm
Engineering — Dimensions9 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd130 mm
Outside diameterD230 mm
WidthB40 mm
Shoulder diameter of inner ring (large side face)d 1162.8 mm
Shoulder diameter of inner ring (small side face)d 2162.8 mm
Shoulder diameter of outer ring (large side face)D 1199.2 mm
Chamfer dimensionr 1,2min. 3 mm
Chamfer dimensionr 3,4min. 1.1 mm
Distance from side face to pressure pointa44.4 mm
Engineering — Engineering specifications1 parameter
Engineering — Engineering specifications
ParameterSymbolValue
Universal matching bearing(s)No
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight6.34 kg
eClass code23-05-08-04
UNSPSC code31171531
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating216.0 kN
Basic static load rating224.0 kN
Attainable speed for grease lubrication6300.0 r/min
Attainable speed for oil-air lubrication9500.0 r/min
Properties13 parameters
Properties
ParameterSymbolValue
Contact typeNormal contact (two-point contact)
Number of rows1
Ring typeOne-piece inner and outer rings
DesignHigh-capacity D
Universal matching bearingNo
Matched arrangementNo
Matched condition (axial clearance/ preload)Not applicable
Tolerance classP4A
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Indicative carbon footprint for new product23.5 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 7226 CD/P4A
Document matching
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