SIFT BEARING STORE CATALOG

31318TimkenTapered Roller

31318 is a Timken tapered roller bearing, bore 90 mm, O.D. 190 mm, width 43 mm, dynamic rating 324 kN. Dimensions, drawing, interchanges and price.

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Bore d90mm
Outside dia. D190mm
Width B43mm
Dynamic Cr324kN
Static C0r421kN
Weight5.93kg
Cr / C0r0.77
Mean dia. dm140mm

Original catalogue drawing - Timken TRB Catalog, page 416

31318 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. D190 mmBore d90 mmWidth B43 mmCup width C30 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 diameter903.5433
DOutside diameter1907.4803
BInner-ring / bearing width431.6929
TOverall assembly width46.51.8307
CCup / outer-ring width301.1811
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)90.000
Bore d (in)3.5433
Outside dia. D (mm)190.000
Outside dia. D (in)7.4803
Width B (mm)43.000
Overall width T (mm)46.500
Overall width T (in)1.8307
Cup width C (mm)30.000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)72800
Basic static load rating Cor (lbs)94600
Basic dynamic load rating Cr (N)324000
Basic static load rating C0r (N)421000
Dynamic rating C1 (N, ISO)324000
Dynamic rating C1 (lbf, ISO)72800
Radial rating C90 (N)84000
Radial rating C90 (lbf)18900
Thrust rating Ca90 (N)119000
Thrust rating Ca90 (lbf)26700
Static rating C0 (N)421000
Static rating C0 (lbf)94600
Factor e0.83
Factor Y0.73
Factor K0.71
Geometry factor G1169.3
Geometry factor G237.1
Geometry factor Cg0.1140
Effective load centre a (mm)13.2

Weight

Weight (kg)5.93

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)4.0
Housing fillet r max (mm)3.0
Shaft shoulder da (mm)117.0
Shaft shoulder db (mm)128.0
Housing shoulder Da (mm)180.0
Housing shoulder Db (mm)164.0
Cage projection Aa (mm)6.9
Cage projection Ab (mm)6.6

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
481,0001023,386
654,00039213,083
840,5001,02434,133
1032,4002,15471,814
1521,6008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 324,000 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.416 (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
1318-K-M-C3FAGBall9019043109 kN6.27
1318-MFAGBall9019043109 kN6.35
6318FAGBall9019043142 kN5.43
6318-2RSRFAGBall9019043142 kN5.396
6318-2ZFAGBall9019043142 kN5.53
QJ318-N2-MPAFAGBall9019043265 kN6.31
N318-E-M1FAGCylindrical Roller9019043370 kN6.19
N318-E-XL-M1FAGCylindrical Roller9019043370 kN6.19
NJ318-E-TVP2FAGCylindrical Roller9019043370 kN5.49
NJ318-E-XL-TVP2FAGCylindrical Roller9019043370 kN5.49

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
30318TimkenTapered Roller9019043375 kN5.56

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30218TimkenTapered Roller9016030240 kN2.63
30318TimkenTapered Roller9019043375 kN5.56
32018XTimkenTapered Roller9014032183 kN1.7
32218TimkenTapered Roller9016040312 kN3.47
32318TimkenTapered Roller9019064575 kN8.51
33118TimkenTapered Roller9015045306 kN3.15
42354X/42584TimkenTapered Roller90148.4328.97-1.9
42354X/42587TimkenTapered Roller90149.2228.97163 kN2.05

Request a quotation for 31318

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