SIFT BEARING STORE CATALOG

31307TimkenTapered Roller

31307 is a Timken tapered roller bearing, bore 35 mm, O.D. 80 mm, width 21 mm, dynamic rating 72.8 kN. Dimensions, drawing, interchanges and price.

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Bore d35mm
Outside dia. D80mm
Width B21mm
Dynamic Cr72.8kN
Static C0r74.8kN
Weight0.55kg
Cr / C0r0.97
Mean dia. dm57.5mm

Original catalogue drawing - Timken TRB Catalog, page 398

31307 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. D80 mmBore d35 mmWidth B21 mmCup width C15 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 diameter351.378
DOutside diameter803.1496
BInner-ring / bearing width210.8268
TOverall assembly width22.750.8957
CCup / outer-ring width150.5906
rChamfer (min)1.50.0591

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)35.000
Bore d (in)1.3780
Outside dia. D (mm)80.000
Outside dia. D (in)3.1496
Width B (mm)21.000
Overall width T (mm)22.750
Overall width T (in)0.8957
Cup width C (mm)15.000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)16400
Basic static load rating Cor (lbs)16800
Basic dynamic load rating Cr (N)72800
Basic static load rating C0r (N)74800
Dynamic rating C1 (N, ISO)72800
Dynamic rating C1 (lbf, ISO)16400
Radial rating C90 (N)18900
Radial rating C90 (lbf)4250
Thrust rating Ca90 (N)26700
Thrust rating Ca90 (lbf)6000
Static rating C0 (N)74800
Static rating C0 (lbf)16800
Factor e0.83
Factor Y0.73
Factor K0.71
Geometry factor G117.8
Geometry factor G28.7
Geometry factor Cg0.0839
Effective load centre a (mm)3.3

Weight

Weight (kg)0.55

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)2.0
Housing fillet r max (mm)1.5
Shaft shoulder da (mm)45.0
Shaft shoulder db (mm)56.0
Housing shoulder Da (mm)76.0
Housing shoulder Db (mm)68.0
Cage projection Aa (mm)2.5
Cage projection Ab (mm)3.6

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
418,2001023,386
612,13339213,083
89,1001,02434,133
107,2802,15471,814
154,8538,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 72,800 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.398 (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
1307-K-TVH-C3FAGBall35802125.5 kN0.5
1307-TVHFAGBall35802125.5 kN0.507
6307FAGBall35802133.5 kN0.471
6307-2RSRFAGBall35802133.5 kN0.483
6307-2ZFAGBall35802133.5 kN0.481
6307-CFAGBall35802137 kN0.434
6307-C-2BRSFAGBall35802137 kN0.447
6307-C-2HRSFAGBall35802137 kN0.449
6307-C-2ZFAGBall35802137 kN0.447
QJ307-TVPFAGBall35802162 kN0.516

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
30307TimkenTapered Roller35802187.2 kN0.53

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
14139X/14272TimkenTapered Roller3569.0119.58-0.3
19138X/19262TimkenTapered Roller3566.6716.52-0.25
19138X/19283TimkenTapered Roller357216.5250.7 kN0.32
19138X/19283XTimkenTapered Roller357216.5250.7 kN0.32
23691/2362TimkenTapered Roller3573.0326.98--
23691/23620TimkenTapered Roller3573.0326.9889.4 kN0.52
23691/23621TimkenTapered Roller3573.0326.9889.4 kN0.52
259/253TimkenTapered Roller357219.25-0.34

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