SIFT BEARING STORE CATALOG

32972TimkenTapered Roller

32972 is a Timken tapered roller bearing, bore 360 mm, O.D. 480 mm, width 76 mm, dynamic rating 1250 kN. Dimensions, drawing, interchanges and price.

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Bore d360mm
Outside dia. D480mm
Width B76mm
Dynamic Cr1250kN
Static C0r2780kN
Weight45.22kg
Cr / C0r0.45
Mean dia. dm420mm

Original catalogue drawing - Timken TRB Catalog, page 432

32972 Timken 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. D480 mmBore d360 mmWidth B76 mmCup width C57 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 diameter36014.1732
DOutside diameter48018.8976
BInner-ring / bearing width762.9921
TOverall assembly width762.9921
CCup / outer-ring width572.2441
rChamfer (min)30.1181

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)360.000
Bore d (in)14.1732
Outside dia. D (mm)480.000
Outside dia. D (in)18.8976
Width B (mm)76.000
Overall width T (mm)76.000
Overall width T (in)2.9921
Cup width C (mm)57.000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)281000
Basic static load rating Cor (lbs)624000
Basic dynamic load rating Cr (N)1250000
Basic static load rating C0r (N)2780000
Dynamic rating C1 (N, ISO)1250000
Dynamic rating C1 (lbf, ISO)281000
Radial rating C90 (N)324000
Radial rating C90 (lbf)72800
Thrust rating Ca90 (N)254000
Thrust rating Ca90 (lbf)57100
Static rating C0 (N)2780000
Static rating C0 (lbf)624000
Factor e0.46
Factor Y1.31
Factor K1.27
Geometry factor G12984.5
Geometry factor G2344.6
Geometry factor Cg0.2061
Effective load centre a (mm)20.6

Weight

Weight (kg)45.22

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)4.0
Housing fillet r max (mm)3.0
Shaft shoulder da (mm)378.0
Shaft shoulder db (mm)385.0
Housing shoulder Da (mm)466.0
Housing shoulder Db (mm)451.0
Cage projection Aa (mm)10.8
Cage projection Ab (mm)4.2

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4312,5001023,386
6208,33339213,083
8156,2501,02434,133
10125,0002,15471,814
1583,3338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,250,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandTimken
Source catalogueTimken Tapered Roller Bearing Catalog (2016)
Catalogue pagep.432 (dimensions)
Series typeTS

ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
32972-XLFAGTapered Roller360480761260 kN36.4
HR32972JNSKTapered Roller36048076243,000 lbs36.106

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
X32972/Y32972TimkenTapered Roller36048076.5--
X32972M/Y32972MTimkenTapered Roller3604801522170 kN92.8
NP771673/NP725758TimkenTapered Roller360.45101031870 kN58.62
LL562749/LL562710TimkenTapered Roller361.95406.423.81198 kN3.69
LL762648/LL762610TimkenTapered Roller361.95401.642-2.67
EE161403D/161900TimkenTapered Roller356.39482.6101.6954 kN48.59
EE121140/121265TimkenTapered Roller355.6673.1152.43690 kN235.18
EE161400/161850TimkenTapered Roller355.6469.955.56628 kN22.86

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