SIFT BEARING STORE CATALOG

32904FAGTapered Roller

32904 is a FAG tapered roller bearing, bore 20 mm, O.D. 37 mm, width 12 mm, dynamic rating 15.7 kN. Dimensions, drawing, interchanges and price.

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Bore d20mm
Outside dia. D37mm
Width B12mm
Dynamic Cr15.7kN
Static C0r18.4kN
Limiting speed21,100rpm
Weight0.053kg
Cr / C0r0.85
Mean dia. dm28.5mm

Original catalogue drawing - FAG Schaeffler HR 1, page 586

32904 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. D37 mmBore d20 mmWidth B12 mmCup width C9 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 diameter200.7874
DOutside diameter371.4567
BInner-ring / bearing width120.4724
TOverall assembly width120.4724
CCup / outer-ring width90.3543

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)20
Outside dia. D (mm)37
Width B (mm)12
Overall width T (mm)12
Cup width C (mm)9
Inner-ring OD d1 (mm)29.5

Load ratings & speeds

Basic dynamic load rating Cr (lbs)3530
Basic static load rating Cor (lbs)4136
Basic dynamic load rating Cr (N)15700
Basic static load rating C0r (N)18400
Basic dynamic axial rating Ca (N)2
Fatigue limit load Cur (N)1960
Factor e0.32
Factor Y1.88
Factor Y01.04
Limiting speed nG (rpm)21,100
Reference speed nB (rpm)11,700
Effective load centre a (mm)8

Weight

Weight (kg)0.053

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)0.3
Shaft shoulder da (mm)24
Shaft shoulder db (mm)24
Housing shoulder Da (mm)32
Housing shoulder Db (mm)34
Housing fillet ra max (mm)0.3
Fillet rb max (mm)0.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 3,000 rpm
43,925102564
62,6173922,181
81,9621,0245,689
101,5702,15411,969
151,0478,32346,241

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 15,700 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.586 (dimensions)

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30204-AFAGTapered Roller20471426.5 kN0.092
30204-XLFAGTapered Roller20471432 kN0.121
30304-AFAGTapered Roller20521534 kN0.188
31304FAGTapered Roller20521530 kN0.174
32004-XFAGTapered Roller20421523.5 kN0.108
32004-X-XLFAGTapered Roller20421528.5 kN0.111
32204-B-XLFAGTapered Roller20471839 kN0.17
32204-XLFAGTapered Roller20471840.5 kN0.165

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