SIFT BEARING STORE CATALOG

30338FAGTapered Roller

30338 is a FAG tapered roller bearing, bore 190 mm, O.D. 400 mm, width 78 mm, dynamic rating 1210 kN. Dimensions, drawing, interchanges and price.

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Bore d190mm
Outside dia. D400mm
Width B78mm
Dynamic Cr1210kN
Static C0r1600kN
Limiting speed1,800rpm
Weight46.7kg
Cr / C0r0.76
Mean dia. dm295mm

Original catalogue drawing - FAG Schaeffler HR 1, page 608

30338 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. D400 mmBore d190 mmWidth B78 mmCup width C65 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 diameter1907.4803
DOutside diameter40015.748
BInner-ring / bearing width783.0709
TOverall assembly width863.3858
CCup / outer-ring width652.5591

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)190
Outside dia. D (mm)400
Width B (mm)78
Overall width T (mm)86
Cup width C (mm)65
Inner-ring OD d1 (mm)278.9

Load ratings & speeds

Basic dynamic load rating Cr (lbs)272019
Basic static load rating Cor (lbs)359694
Basic dynamic load rating Cr (N)1.21e+06
Basic static load rating C0r (N)1.6e+06
Basic dynamic axial rating Ca (N)10
Fatigue limit load Cur (N)165000
Factor e0.35
Factor Y1.74
Factor Y00.96
Limiting speed nG (rpm)1,800
Reference speed nB (rpm)1,180
Effective load centre a (mm)72

Weight

Weight (kg)46.7

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)6
Shaft shoulder da (mm)240
Shaft shoulder db (mm)210
Housing shoulder Da (mm)341
Housing shoulder Db (mm)364
Housing fillet ra max (mm)6
Fillet rb max (mm)5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 600 rpm
4302,5001022,822
6201,66739210,903
8151,2501,02428,444
10121,0002,15459,845
1580,6678,323231,207

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,210,000 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.608 (dimensions)

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
6338NSKBall1904007879,700 lbs50.802
7338BNSKBall1904007892,600 lbs47.174
338NSKCylindrical Roller19040078219,000 lbs49.442
NU338ENSKCylindrical Roller190400781300 kN50.6
30338NSKTapered Roller19040078227,000 lbs46.008
7338NSKPrecision / Angular Contact19040078495 kN47.5

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
6338-MFAGBall19040078375 kN50.4
QJ338-N2-MPAFAGBall19040078735 kN52.1
NU338-E-M1FAGCylindrical Roller190400781120 kN50.6
NU338-E-TB-M1FAGCylindrical Roller190400781120 kN50.6

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30238FAGTapered Roller19034055530 kN20.8
30238-XLFAGTapered Roller19034055800 kN21.4
32038-XFAGTapered Roller19029064630 kN14.8
32038-X-XLFAGTapered Roller19029064740 kN14.6
32038-X-XL-DF-A120-150FAGTapered Roller190290None1280 kN30.1
32038-X-XL-DF-A200-250FAGTapered Roller190290None1280 kN30.1
32038-X-XL-DF-A300-350FAGTapered Roller190290None1280 kN30.1
32038-X-XL-DF-A350-400FAGTapered Roller190290None1280 kN30.1

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