SIFT BEARING STORE CATALOG

30308-AFAGTapered Roller

30308-A is a FAG tapered roller bearing, bore 40 mm, O.D. 90 mm, width 23 mm, dynamic rating 92 kN. Dimensions, drawing, interchanges and price.

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Bore d40mm
Outside dia. D90mm
Width B23mm
Dynamic Cr92kN
Static C0r103kN
Limiting speed8,000rpm
Weight0.812kg
Cr / C0r0.89
Mean dia. dm65mm

Original catalogue drawing - FAG Schaeffler HR 1, page 478

30308-A FAG Tapered Roller bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdBOutside dia. D90 mmBore d40 mmWidth B23 mmCup width C20 mm

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

SymbolDimensionmminch
dBore diameter401.5748
DOutside diameter903.5433
BInner-ring / bearing width230.9055
TOverall assembly width25.250.9941
CCup / outer-ring width200.7874

Notes

Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)40
Outside dia. D (mm)90
Width B (mm)23
Overall width T (mm)25.25
Cup width C (mm)20
Inner-ring OD d1 (mm)63.3

Load ratings & speeds

Basic dynamic load rating Cr (lbs)20682
Basic static load rating Cor (lbs)23155
Basic dynamic load rating Cr (N)92000
Basic static load rating C0r (N)103000
Basic dynamic axial rating Ca (N)3
Fatigue limit load Cur (N)11900
Factor e0.35
Factor Y1.74
Factor Y00.96
Limiting speed nG (rpm)8,000
Reference speed nB (rpm)5,800
Effective load centre a (mm)20

Weight

Weight (kg)0.812

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)2
Shaft shoulder da (mm)52
Shaft shoulder db (mm)49
Housing shoulder Da (mm)81
Housing shoulder Db (mm)82
Housing fillet ra max (mm)2
Fillet rb max (mm)1.5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 2,600 rpm
423,000102651
615,3333922,516
811,5001,0246,564
109,2002,15413,810
156,1338,32353,356

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 92,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandFAG
Source catalogueFAG / Schaeffler Rolling Bearings HR 1
Catalogue pagep.478 (dimensions)

Load ratings in newtons, fatigue limit load Cur, limiting speed nG and reference speed nB.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
1308NSKBall4090236,520 lbs0.744
6308NSKBall4090239,160 lbs0.635
7308BNSKBall4090239,480 lbs0.658
BL308NSKBall40902312,300 lbs0.667
308NSKCylindrical Roller40902313,200 lbs0.653
NU308ENSKCylindrical Roller409023102 kN0.747
21308EAE4NSKSpherical Roller409023118 kN0.73
HR30308NSKTapered Roller409023111 kN0.758
HR30308CNSKTapered Roller40902319,000 lbs0.717
HR30308JNSKTapered Roller40902320,300 lbs0.757

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
1308-K-TVH-C3FAGBall40902330 kN0.698
1308-TVHFAGBall40902330 kN0.708
6308FAGBall40902342.5 kN0.64
6308-2RSRFAGBall40902342.5 kN0.654
6308-2ZFAGBall40902342.5 kN0.654
6308-CFAGBall40902347 kN0.6
6308-C-2BRSFAGBall40902347 kN0.654
6308-C-2HRSFAGBall40902347 kN0.622

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30208-AFAGTapered Roller40801861 kN0.435
30208-XLFAGTapered Roller40801873 kN0.432
31308-AFAGTapered Roller40902376 kN0.727
31308-A-N11CA-A50-90FAGTapered Roller4090None130 kN1.52
31308-XLFAGTapered Roller40902389 kN0.723
31308-XL-DF-A115-155FAGTapered Roller4090None153 kN1.52
31308-XL-DF-A50-90FAGTapered Roller4090None153 kN1.52
32008-X-XLFAGTapered Roller40681963 kN0.28

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