SIFT BEARING STORE CATALOG

31308TimkenTapered Roller

31308 is a Timken tapered roller bearing, bore 40 mm, O.D. 90 mm, width 23 mm, dynamic rating 85.3 kN. Dimensions, drawing, interchanges and price.

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Bore d40mm
Outside dia. D90mm
Width B23mm
Dynamic Cr85.3kN
Static C0r88.1kN
Weight0.73kg
Cr / C0r0.97
Mean dia. dm65mm

Original catalogue drawing - Timken TRB Catalog, page 400

31308 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. D90 mmBore d40 mmWidth B23 mmCup width C17 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 diameter401.5748
DOutside diameter903.5433
BInner-ring / bearing width230.9055
TOverall assembly width25.250.9941
CCup / outer-ring width170.6693
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)40.000
Bore d (in)1.5748
Outside dia. D (mm)90.000
Outside dia. D (in)3.5433
Width B (mm)23.000
Overall width T (mm)25.250
Overall width T (in)0.9941
Cup width C (mm)17.000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)19200
Basic static load rating Cor (lbs)19800
Basic dynamic load rating Cr (N)85300
Basic static load rating C0r (N)88100
Dynamic rating C1 (N, ISO)85300
Dynamic rating C1 (lbf, ISO)19200
Radial rating C90 (N)22100
Radial rating C90 (lbf)4970
Thrust rating Ca90 (N)31200
Thrust rating Ca90 (lbf)7020
Static rating C0 (N)88100
Static rating C0 (lbf)19800
Factor e0.83
Factor Y0.73
Factor K0.71
Geometry factor G122.9
Geometry factor G210.3
Geometry factor Cg0.0910
Effective load centre a (mm)4.1

Weight

Weight (kg)0.73

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)2.0
Housing fillet r max (mm)1.5
Shaft shoulder da (mm)52.0
Shaft shoulder db (mm)61.0
Housing shoulder Da (mm)86.0
Housing shoulder Db (mm)76.0
Cage projection Aa (mm)4.0
Cage projection Ab (mm)3.1

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
421,3251023,386
614,21739213,083
810,6621,02434,133
108,5302,15471,814
155,6878,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 85,300 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.400 (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
1308-K-TVH-C3FAGBall40902330 kN0.698
1308-TVHFAGBall40902330 kN0.708
6308FAGBall40902342.5 kN0.64
6308-2RSRFAGBall40902342.5 kN0.654
6308-2ZFAGBall40902342.5 kN0.654
6308-CFAGBall40902347 kN0.6
6308-C-2BRSFAGBall40902347 kN0.654
6308-C-2HRSFAGBall40902347 kN0.622
6308-C-2ZFAGBall40902347 kN0.617
QJ308-TVPFAGBall40902386.5 kN0.695

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
30308TimkenTapered Roller40902398.7 kN0.73

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
11157X/11300TimkenTapered Roller4076.217.38-0.35
28158/28300TimkenTapered Roller4076.220.94-0.39
28158/28300XTimkenTapered Roller4076.220.9475.2 kN0.38
28158/28315TimkenTapered Roller408020.9475.2 kN0.44
28158/28315ATimkenTapered Roller408020.9475.2 kN0.44
28158/28318DTimkenTapered Roller4080.0346.04131 kN0.94
30208TimkenTapered Roller40801870.9 kN0.43
30308TimkenTapered Roller40902398.7 kN0.73

Request a quotation for 31308

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