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SKF / Deep groove ball bearings

SKF 61821-2RZ

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

Technical data available
Bore diameterd
105 mm
Outside diameterD
130 mm
WidthB
13 mm
Dynamic load ratingC
20.8 kN
Static load ratingC0
19.6 kN
Limiting speednG
5000 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 diameterd105 mm
Outside diameterD130 mm
WidthB13 mm
Basic dynamic load ratingC20.8 kN
Basic static load ratingC019.6 kN
Fatigue load limitPu1 kN
Reference speednref10000 r/min
Limiting speednG5000 r/min
Mass≈m0.325 kg
Precision classNormal
Internal clearanceCN
SealingSeal on both sides
CageSheet metal
Bearing materialBearing steel
LubricantGrease
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.
Dimensions3 parameters
Dimensions
ParameterSymbolValue
Bore diameter105.0 mm
Outside diameter130.0 mm
Width13.0 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. 110 mm
Diameter of shaft abutmentd amax. 112 mm
Diameter of housing abutmentD amax. 125 mm
Radius of shaft or housing filletr amax. 1 mm
Engineering — Calculation data7 parameters
Engineering — Calculation data
ParameterSymbolValue
Basic dynamic load ratingC20.8 kN
Basic static load ratingC 019.6 kN
Fatigue load limitP u1 kN
Reference speed10000 r/min
Limiting speed5000 r/min
Minimum load factork r0.02
Calculation factorf 013.2
Engineering — Dimensions10 parameters
Engineering — Dimensions
ParameterSymbolValue
Bore diameterd105 mm
Deviation limits of mid-range bore diametert Δdmp-0.02 to 0 mm
Outside diameterD130 mm
Deviation limits of mid-range outside diametert ΔDmp-0.018 to 0 mm
WidthB13 mm
Deviation limits of ring widtht ΔBs-0.2 to 0 mm
Shoulder diameterd 1≈ 112.25 mm
Recess diameterD 2≈ 124.4 mm
Chamfer dimensionr 1,2min. 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 Kia25 µm
Range of section height at outer ring of assembled bearingt Kea40 µm
ISO tolerance class for geometrical tolerancesNormal
Logistics3 parameters
Logistics
ParameterSymbolValue
Product net weight0.325 kg
eClass code23-05-08-01
UNSPSC code31171504
Performance4 parameters
Performance
ParameterSymbolValue
Basic dynamic load rating20.8 kN
Basic static load rating19.6 kN
Reference speed10000.0 r/min
Limiting speed5000.0 r/min
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 product1.2 kg CO 2 e

Technical documents & data sheet

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Record identity
SKF 61821-2RZ
Document matching
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