SIFT BEARING STORE CATALOG

K34306-34478FAGTapered Roller

K34306-34478 is a FAG tapered roller bearing, bore 77.79 mm, O.D. 121.44 mm, width 23.01 mm. Dimensions, drawing, interchanges and price.

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Bore d77.79mm
Outside dia. D121.44mm
Width B23.01mm
Dynamic Cr81kN
Static C0r112kN
Limiting speed5,300rpm
Weight0.932kg
Cr / C0r0.72
Mean dia. dm99.6mm

Original catalogue drawing - FAG Schaeffler HR 1, page 494

K34306-34478 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. D121.44 mmBore d77.79 mmWidth B23.01 mmCup width C17.46 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 diameter77.7883.0625
DOutside diameter121.4424.7812
BInner-ring / bearing width23.0120.906
TOverall assembly width24.6080.9688
CCup / outer-ring width17.4620.6875

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)77.788
Outside dia. D (mm)121.442
Width B (mm)23.012
Overall width T (mm)24.608
Cup width C (mm)17.462
Inner-ring OD d1 (mm)99.7

Load ratings & speeds

Basic dynamic load rating Cr (lbs)18210
Basic static load rating Cor (lbs)25179
Basic dynamic load rating Cr (N)81000
Basic static load rating C0r (N)112000
Basic dynamic axial rating Ca (N)3
Fatigue limit load Cur (N)13700
Factor e0.45
Factor Y1.33
Factor Y00.73
Limiting speed nG (rpm)5,300
Effective load centre a (mm)26

Weight

Weight (kg)0.932

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)3.5
Shaft shoulder da (mm)84
Shaft shoulder db (mm)90
Housing shoulder Da (mm)110
Housing shoulder Db (mm)116
Housing fillet ra max (mm)3.5
Fillet rb max (mm)2

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 1,700 rpm
420,250102996
613,5003923,848
810,1251,02410,039
108,1002,15421,122
155,4008,32381,603

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 81,000 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.494 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
34306/34478TimkenTapered Roller77.79121.4423.01121 kN0.9
34307/34478TimkenTapered Roller77.79121.4423.01102 kN0.88

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
K42690-42620FAGTapered Roller77.7912731136 kN1.45
KLM814849-LM814810FAGTapered Roller77.79117.4725.499 kN0.932
K42687-42620FAGTapered Roller76.212731136 kN1.51
K495-A-492-AFAGTapered Roller76.2133.3529.77134 kN1.95
K495-A-493FAGTapered Roller76.2136.5329.77134 kN2.05
KHM515745-HM515716FAGTapered Roller76.2142.1446.1206 kN2.99
KHM516442-HM516410FAGTapered Roller76.2133.3539.69183 kN2.43
KHM516447-HM516410FAGTapered Roller76.2133.3539.69183 kN2.43

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