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SKF / Angular contact ball bearings

SKF BA1B 311576

Single row angular contact ball bearing technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
762 mm
Outside diameterD
889 mm
WidthB
63.5 mm
Dynamic load ratingC
449 kN
Static load ratingC0
1270 kN
Limiting speednG
600 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 specifications15 parameters
Core specifications
ParameterSymbolValue
Variant / constructionAngular contact ball bearings
Bore diameterd762 mm
Outside diameterD889 mm
WidthB63.5 mm
Basic dynamic load ratingC449 kN
Basic static load ratingC01270 kN
Fatigue load limitPu18.6 kN
Reference speednref560 r/min
Limiting speednG600 r/min
Mass≈m57.8 kg
Precision classNormal
SealingWithout
CageNon-metallic
Bearing materialBearing steel
LubricantNone
Precision classification2 parameters
Precision classification
ParameterSymbolValue
Radial ball bearing tolerance equivalentABEC 1Derived from ISO Normal; not a direct ABEC marking
Mapping basisISO 492 / ANSI/ABMA 20The original manufacturer tolerance remains the controlling value.
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Bore diameter762.0 mm
Outside diameter889.0 mm
Width63.5 mm
Contact angle30.0 °
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryAngular contact ball bearings
Official taxonomy path/products/rolling-bearings/ball-bearings/angular-contact-ball-bearings/single-row-angular-contact-ball-bearings
Structure group IDBA1_001_101
Available from SKFYes
RemanufacturableYes
Engineering — Abutment dimensions5 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of shaft abutmentd amin. 773 mm
Abutment diameter housingD amax. 878 mm
Diameter of housing abutmentD bmax. 878 mm
Radius of filletr amax. 2 mm
Radius of filletr bmax. 2 mm
Engineering — Calculation data8 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC449 kN
Basic static load ratingC 01270 kN
Fatigue load limitP u18.6 kN
Reference speed560 r/min
Limiting speed600 r/min
Minimum axial load factorA11.5
Minimum radial load factork r0.08
Limiting valuee0.8
Engineering — Calculation data — Bearing pair arranged back-to-back or face-to-face4 parameters
Engineering — Calculation data — Bearing pair arranged back-to-back or face-to-face
ParameterSymbolValue
Calculation factor (back-to-back, face-to-face)X0.63
Calculation factor (back-to-back, face-to-face)Y 00.66
Calculation factor (back-to-back, face-to-face)Y 10.78
Calculation factor (back-to-back, face-to-face)Y 21.2
Engineering — Calculation data — Single bearing or bearing pair arranged in tandem3 parameters
Engineering — Calculation data — Single bearing or bearing pair arranged in tandem
ParameterSymbolValue
Calculation factor (single, tandem)X0.39
Calculation factor (single, tandem)Y 00.33
Calculation factor (single, tandem)Y 20.76
Engineering — Dimensions12 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd762 mm
Deviation limits of mid-range bore diametert Δdmp-0.075 to 0 mm
Outside diameterD889 mm
Deviation limits of mid-range outside diametert ΔDmp-0.1 to 0 mm
WidthB63.5 mm
Deviation limits of ring widtht ΔBs-0.75 to 0 mm
Shoulder diameter of inner ring (large side face)d 1≈ 804 mm
Shoulder diameter of outer ring (large side face)D 1≈ 848 mm
Distance side face to pressure pointa271 mm
Chamfer dimensionr 1,2min. 2.1 mm
Chamfer dimensionr 3,4min. 2.1 mm
ISO tolerance class for dimensionsNormal
Engineering — Tolerances of run-out3 parameters
Engineering — Tolerances of run-out
ParameterSymbolValue
Range of section height at inner ring of assembled bearingt Kia80 µm
Range of section height at outer ring of assembled bearingt Kea140 µm
ISO tolerance class for geometrical tolerancesNormal
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight57.8 kg
eClass code23-05-08-03
UNSPSC code31171531
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating449.0 kN
Basic static load rating1270.0 kN
Reference speed560.0 r/min
Limiting speed600.0 r/min
Properties14 parameters
Properties
ParameterSymbolValue
Contact typeNormal contact (two-point contact)
Number of rows1
Locating feature, bearing outer ringWithout
Ring typeOne-piece inner and outer rings
CageNon-metallic
Matched arrangementNo
Axial internal clearanceNot applicable
Tolerance classNormal
Material, bearingBearing steel
CoatingWithout
SealingWithout
LubricantNone
Relubrication featureWithout
Indicative carbon footprint for new product214.0 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF BA1B 311576
Document matching
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