SIFT BEARING STORE CATALOG

31326XTimkenTapered Roller

31326X is a Timken tapered roller bearing, bore 130 mm, O.D. 280 mm, width 66 mm, dynamic rating 691 kN. Dimensions, drawing, interchanges and price.

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Bore d130mm
Outside dia. D280mm
Width B66mm
Dynamic Cr691kN
Static C0r966kN
Weight19.16kg
Cr / C0r0.72
Mean dia. dm205mm

Original catalogue drawing - Timken TRB Catalog, page 424

31326X 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. D280 mmBore d130 mmWidth B66 mmCup width C44 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 diameter1305.1181
DOutside diameter28011.0236
BInner-ring / bearing width662.5984
TOverall assembly width63.752.5098
CCup / outer-ring width441.7323
rChamfer (min)40.1575

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)130.000
Bore d (in)5.1181
Outside dia. D (mm)280.000
Outside dia. D (in)11.0236
Width B (mm)66.000
Overall width T (mm)63.750
Overall width T (in)2.5098
Cup width C (mm)44.000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)155000
Basic static load rating Cor (lbs)217000
Basic dynamic load rating Cr (N)691000
Basic static load rating C0r (N)966000
Dynamic rating C1 (N, ISO)691000
Dynamic rating C1 (lbf, ISO)155000
Radial rating C90 (N)179000
Radial rating C90 (lbf)40300
Thrust rating Ca90 (N)253000
Thrust rating Ca90 (lbf)56900
Static rating C0 (N)966000
Static rating C0 (lbf)217000
Factor e0.83
Factor Y0.73
Factor K0.71
Geometry factor G1411.8
Geometry factor G242.2
Geometry factor Cg0.1280
Effective load centre a (mm)14.7

Weight

Weight (kg)19.16

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)5.0
Housing fillet r max (mm)4.0
Shaft shoulder da (mm)163.0
Shaft shoulder db (mm)186.0
Housing shoulder Da (mm)262.0
Housing shoulder Db (mm)238.0
Cage projection Aa (mm)15.7
Cage projection Ab (mm)9.4

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4172,7501023,386
6115,16739213,083
886,3751,02434,133
1069,1002,15471,814
1546,0678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 691,000 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.424 (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
31326-XFAGTapered Roller13028066610 kN19.1
31326-X-XLFAGTapered Roller13028066720 kN19
HR31326NSKTapered Roller13028066770 kN18.8

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30226TimkenTapered Roller13023040407 kN7.06
30326TimkenTapered Roller13028058752 kN17.43
32026XTimkenTapered Roller13020045386 kN4.98
32226TimkenTapered Roller13023064644 kN11.4
32326TimkenTapered Roller130280931120 kN26.99
32926TimkenTapered Roller13018032210 kN2.36
74511X/74845TimkenTapered Roller130214.973.5-6.67
797/792TimkenTapered Roller130206.3847.62378 kN5.65

Request a quotation for 31326X

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