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SKF / Deep groove ball bearings

SKF 6308-2RZ

Deep groove ball bearing with seals or shields technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
40 mm
Outside diameterD
90 mm
WidthB
23 mm
Dynamic load ratingC
42.3 kN
Static load ratingC0
24 kN
Limiting speednG
8500 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 specifications16 parameters
Core specifications
ParameterSymbolValue
Variant / constructionDeep groove ball bearings
Bore diameterd40 mm
Outside diameterD90 mm
WidthB23 mm
Basic dynamic load ratingC42.3 kN
Basic static load ratingC024 kN
Fatigue load limitPu1.02 kN
Reference speednref17000 r/min
Limiting speednG8500 r/min
Mass≈m0.625 kg
Precision classP6 and tighter width tolerance
Internal clearanceCN
SealingSeal on both sides
CageSheet metal
Bearing materialBearing steel
LubricantGrease
Precision classification2 parameters
Precision classification
ParameterSymbolValue
Radial ball bearing tolerance equivalentABEC 3Derived from ISO P6; not a direct ABEC marking
Mapping basisISO 492 / ANSI/ABMA 20The original manufacturer tolerance remains the controlling value.
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter40.0 mm
Outside diameter90.0 mm
Width23.0 mm
Product identity5 parameters
Product identity
ParameterSymbolValue
Official product categoryDeep groove ball bearings
Official taxonomy path/products/rolling-bearings/ball-bearings/deep-groove-ball-bearings
Structure group IDBB1_001_101
Available from SKFYes
RemanufacturableNo
Engineering — Abutment dimensions4 parameters
Engineering — Abutment dimensions
ParameterSymbolValue
Diameter of shaft abutmentd amin. 49 mm
Diameter of shaft abutmentd amax. 56 mm
Diameter of housing abutmentD amax. 81 mm
Radius of shaft or housing filletr amax. 1.5 mm
Engineering — Calculation data8 parameters
Engineering — Calculation data
ParameterSymbolValue
SKF performance classSKF Explorer
Basic dynamic load ratingC42.3 kN
Basic static load ratingC 024 kN
Fatigue load limitP u1.02 kN
Reference speed17000 r/min
Limiting speed8500 r/min
Minimum load factork r0.03
Calculation factorf 013.2
Engineering — Dimensions10 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd40 mm
Deviation limits of mid-range bore diametert Δdmp-0.01 to 0 mm
Outside diameterD90 mm
Deviation limits of mid-range outside diametert ΔDmp-0.013 to 0 mm
WidthB23 mm
Deviation limits of ring widtht ΔBs-0.06 to 0 mm
Shoulder diameterd 1≈ 56.11 mm
Recess diameterD 2≈ 77.7 mm
Chamfer dimensionr 1,2min. 1.5 mm
ISO tolerance class for dimensionsP6 and tighter width tolerance
Engineering — Tolerances of run-out3 parameters
Engineering — Tolerances of run-out
ParameterSymbolValue
Range of section height at inner ring of assembled bearingt Kia10 µm
Range of section height at outer ring of assembled bearingt Kea18 µm
ISO tolerance class for geometrical tolerancesP6
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.625 kg
eClass code23-05-08-01
UNSPSC code31171504
Performance5 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating42.3 kN
Basic static load rating24.0 kN
Reference speed17000.0 r/min
Limiting speed8500.0 r/min
SKF performance classSKF Explorer
Properties14 parameters
Properties
ParameterSymbolValue
Filling slotsWithout
Number of rows1
Locating feature, bearing outer ringWithout
Bore typeCylindrical
CageSheet metal
Matched arrangementNo
Radial internal clearanceCN
Material, bearingBearing steel
CoatingWithout
SealingSeal on both sides
Sealing typeNon-contact
LubricantGrease
Relubrication featureWithout
Indicative carbon footprint for new product2.3 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF 6308-2RZ
Document matching
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