SIFT BEARING STORE CATALOG

31306-A-N11CA-A50-90FAGTapered Roller

31306-A-N11CA-A50-90 is a FAG tapered roller bearing, bore 30 mm, O.D. 72 mm, dynamic rating 77 kN. Dimensions, drawing, interchanges and price.

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Bore d30mm
Outside dia. D72mm
Dynamic Cr77kN
Static C0r93kN
Weight0.85kg
Cr / C0r0.83
Mean dia. dm51mm

Original catalogue drawing - FAG Schaeffler HR 1, page 492

31306-A-N11CA-A50-90 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. D72 mmBore d30 mmWidth B21 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 diameter301.1811
DOutside diameter722.8346

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)30
Outside dia. D (mm)72

Load ratings & speeds

Basic dynamic load rating Cr (lbs)17310
Basic static load rating Cor (lbs)20907
Basic dynamic load rating Cr (N)77000
Basic static load rating C0r (N)93000
Basic dynamic axial rating Ca (N)3
Fatigue limit load Cur (N)10600
Factor e0.83
Factor Y00.8

Weight

Weight (kg)0.85

Mounting dimensions (fillets / shoulders)

Shaft shoulder da (mm)40
Housing shoulder Da (mm)65
Fillet rb max (mm)1.5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
419,2501023,386
612,83339213,083
89,6251,02434,133
107,7002,15471,814
155,1338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 77,000 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.492 (dimensions)

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
31306-AFAGTapered Roller30721945 kN0.441

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30206-AFAGTapered Roller30621643.5 kN0.237
30206-XLFAGTapered Roller30621652 kN0.238
30306-AFAGTapered Roller30721960 kN0.445
30306-XLFAGTapered Roller30721977 kN0.445
32006-XFAGTapered Roller30551737.5 kN0.195
32006-X-XLFAGTapered Roller30551746 kN0.174
32206-AFAGTapered Roller30622053 kN0.274
32206-B-XLFAGTapered Roller30622062 kN0.28

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