SIFT BEARING STORE CATALOG

K90381-90744FAGTapered Roller

K90381-90744 is a FAG tapered roller bearing, bore 96.84 mm, O.D. 188.91 mm, width 46.04 mm. Dimensions, drawing, interchanges and price.

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Bore d96.84mm
Outside dia. D188.91mm
Width B46.04mm
Dynamic Cr270kN
Static C0r340kN
Limiting speed3,550rpm
Weight5.62kg
Cr / C0r0.79
Mean dia. dm142.9mm

Original catalogue drawing - FAG Schaeffler HR 1, page 626

K90381-90744 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. D188.91 mmBore d96.84 mmWidth B46.04 mmCup width C31.75 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 diameter96.8383.8125
DOutside diameter188.9127.4375
BInner-ring / bearing width46.0381.8125
TOverall assembly width50.82
CCup / outer-ring width31.751.25

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)96.838
Outside dia. D (mm)188.912
Width B (mm)46.038
Overall width T (mm)50.8
Cup width C (mm)31.75
Inner-ring OD d1 (mm)142.9

Load ratings & speeds

Basic dynamic load rating Cr (lbs)60698
Basic static load rating Cor (lbs)76435
Basic dynamic load rating Cr (N)270000
Basic static load rating C0r (N)340000
Basic dynamic axial rating Ca (N)2.5
Fatigue limit load Cur (N)38000
Factor e0.87
Factor Y0.69
Factor Y00.38
Limiting speed nG (rpm)3,550
Effective load centre a (mm)64

Weight

Weight (kg)5.62

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)3.5
Shaft shoulder da (mm)113
Shaft shoulder db (mm)125
Housing shoulder Da (mm)161
Housing shoulder Db (mm)179
Housing fillet ra max (mm)3.5
Fillet rb max (mm)3.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 1,100 rpm
467,5001021,539
645,0003925,947
833,7501,02415,515
1027,0002,15432,643
1518,0008,323126,113

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 270,000 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.626 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
90381/90744TimkenTapered Roller96.84188.9146.04383 kN5.59

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
K42381-42584FAGTapered Roller96.84148.4328.97139 kN1.75
K594-592-A-XLFAGTapered Roller95.25152.436.32215 kN2.55
K594-A-592-A-XLFAGTapered Roller95.25152.436.32215 kN2.57
K683-672-XLFAGTapered Roller95.25168.2841.27265 kN3.78
30219-AFAGTapered Roller9517032225 kN3.13
30219-XLFAGTapered Roller9517032265 kN3.13
30319-AFAGTapered Roller9520045370 kN6.77
31319-AFAGTapered Roller9520045310 kN7.08

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