SIFT BEARING STORE CATALOG

31308-XL-DF-A115-155FAGTapered Roller

31308-XL-DF-A115-155 is a FAG tapered roller bearing, bore 40 mm, O.D. 90 mm, dynamic rating 153 kN. Dimensions, drawing, interchanges and price.

X-life
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Bore d40mm
Outside dia. D90mm
Dynamic Cr153kN
Static C0r165kN
Limiting speed8,700rpm
Weight1.52kg
Cr / C0r0.93
Mean dia. dm65mm

Original catalogue drawing - FAG Schaeffler HR 1, page 632

31308-XL-DF-A115-155 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 B25 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

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

Load ratings & speeds

Basic dynamic load rating Cr (lbs)34396
Basic static load rating Cor (lbs)37093
Basic dynamic load rating Cr (N)153000
Basic static load rating C0r (N)165000
Basic dynamic axial rating Ca (N)4
Fatigue limit load Cur (N)24200
Factor e0.83
Factor Y00.8
Limiting speed nG (rpm)8,700
Reference speed nB (rpm)5,100

Weight

Weight (kg)1.52

Mounting dimensions (fillets / shoulders)

Shaft shoulder da (mm)51
Housing shoulder Da (mm)71
Fillet rb max (mm)1.5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 2,900 rpm
438,250102584
625,5003922,256
819,1251,0245,885
1015,3002,15412,382
1510,2008,32347,836

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 153,000 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.632 (dimensions)

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
31308-AFAGTapered Roller40902376 kN0.727
31308-A-N11CA-A50-90FAGTapered Roller4090None130 kN1.52
31308-XLFAGTapered Roller40902389 kN0.723
31308-XL-DF-A50-90FAGTapered Roller4090None153 kN1.52

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30208-AFAGTapered Roller40801861 kN0.435
30208-XLFAGTapered Roller40801873 kN0.432
30308-AFAGTapered Roller40902392 kN0.812
32008-X-XLFAGTapered Roller40681963 kN0.28
32008-XAFAGTapered Roller40681952 kN0.312
32208-AFAGTapered Roller40802379 kN0.551
32208-B-XLFAGTapered Roller40802387 kN0.57
32208-XLFAGTapered Roller40802394 kN0.6

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