SIFT BEARING STORE CATALOG

31330XTimkenTapered Roller

31330X is a Timken tapered roller bearing, bore 150 mm, O.D. 320 mm, width 75 mm, dynamic rating 862 kN. Dimensions, drawing, interchanges and price.

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Bore d150mm
Outside dia. D320mm
Width B75mm
Dynamic Cr862kN
Static C0r1200kN
Weight28.15kg
Cr / C0r0.72
Mean dia. dm235mm

Original catalogue drawing - Timken TRB Catalog, page 426

31330X 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. D320 mmBore d150 mmWidth B75 mmCup width C50 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 diameter1505.9055
DOutside diameter32012.5984
BInner-ring / bearing width752.9528
TOverall assembly width823.2283
CCup / outer-ring width501.9685
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)150.000
Bore d (in)5.9055
Outside dia. D (mm)320.000
Outside dia. D (in)12.5984
Width B (mm)75.000
Overall width T (mm)82.000
Overall width T (in)3.2283
Cup width C (mm)50.000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)194000
Basic static load rating Cor (lbs)270000
Basic dynamic load rating Cr (N)862000
Basic static load rating C0r (N)1200000
Dynamic rating C1 (N, ISO)862000
Dynamic rating C1 (lbf, ISO)194000
Radial rating C90 (N)224000
Radial rating C90 (lbf)50300
Thrust rating Ca90 (N)316000
Thrust rating Ca90 (lbf)71000
Static rating C0 (N)1200000
Static rating C0 (lbf)270000
Factor e0.83
Factor Y0.73
Factor K0.71
Geometry factor G1544.4
Geometry factor G254.9
Geometry factor Cg0.1410
Effective load centre a (mm)18.0

Weight

Weight (kg)28.15

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)5.0
Housing fillet r max (mm)4.0
Shaft shoulder da (mm)187.0
Shaft shoulder db (mm)210.0
Housing shoulder Da (mm)300.0
Housing shoulder Db (mm)276.0
Cage projection Aa (mm)18.5
Cage projection Ab (mm)8.9

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4215,5001023,386
6143,66739213,083
8107,7501,02434,133
1086,2002,15471,814
1557,4678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 862,000 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.426 (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
31330-XFAGTapered Roller15032075790 kN28
31330-X-XLFAGTapered Roller15032075930 kN27.8
HR31330NSKTapered Roller15032075975 kN28.5

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30230TimkenTapered Roller15027045533 kN11.03
32030XTimkenTapered Roller15022548418 kN6.38
32230TimkenTapered Roller15027073804 kN17.69
32930TimkenTapered Roller15021038306 kN3.99
33030TimkenTapered Roller15022559530 kN8
81590/81962TimkenTapered Roller150244.4750.01402 kN7.91
81590/81963CDTimkenTapered Roller150244.47107.95699 kN17.18
81590/81964TimkenTapered Roller15024550.01402 kN7.93

Request a quotation for 31330X

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