SIFT BEARING STORE CATALOG

LM770945/LM770910TimkenTapered Roller

LM770945/LM770910 is a Timken tapered roller bearing, bore 450.85 mm, O.D. 603.25 mm, width 84.14 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d450.85mm
Outside dia. D603.25mm
Width B84.14mm
Dynamic Cr1490kN
Static C0r3440kN
Weight63.95kg
Cr / C0r0.43
Mean dia. dm527mm

Original catalogue drawing - Timken TRB Catalog, page 378

LM770945/LM770910 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. D603.25 mmBore d450.85 mmWidth B84.14 mmCup width C60.33 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 diameter450.8517.75
DOutside diameter603.2523.75
BInner-ring / bearing width84.1383.3125
TOverall assembly width85.7253.375
CCup / outer-ring width60.3252.375
rChamfer (min)3.30.1299

Notes

Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. 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)450.850
Bore d (in)17.7500
Outside dia. D (mm)603.250
Outside dia. D (in)23.7500
Width B (mm)84.138
Overall width T (mm)85.725
Overall width T (in)3.3750
Cup width C (mm)60.325

Load ratings & speeds

Basic dynamic load rating Cr (lbs)335000
Basic static load rating Cor (lbs)773000
Basic dynamic load rating Cr (N)1490000
Basic static load rating C0r (N)3440000
Dynamic rating C1 (N, ISO)1490000
Dynamic rating C1 (lbf, ISO)335000
Radial rating C90 (N)386000
Radial rating C90 (lbf)86800
Thrust rating Ca90 (N)300000
Thrust rating Ca90 (lbf)67300
Static rating C0 (N)3440000
Static rating C0 (lbf)773000
Factor e0.45
Factor Y1.32
Factor K1.29
Geometry factor G14660.5
Geometry factor G2534.5
Geometry factor Cg0.2366
Effective load centre a (mm)30.5

Weight

Weight (kg)63.95
Cone weight (kg)46.33
Cup weight (kg)17.94
Total weight (kg)64.27

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)6.4
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)474.0
Shaft shoulder db (mm)484.0
Housing shoulder Da (mm)579.7
Housing shoulder Db (mm)570.0
Cage projection Aa (mm)13.4
Cage projection Ab (mm)3.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4372,5001023,386
6248,33339213,083
8186,2501,02434,133
10149,0002,15471,814
1599,3338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,490,000 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.378 (dimensions) / p.211 (cone) / p.211 (cup)
Series typeTS

ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
M270449DA/M270410TimkenTapered Roller449.95594.951783470 kN137.77
80176/80217TimkenTapered Roller447.68552.4544.45626 kN21.26
80176/80222TimkenTapered Roller447.68565.1544.45626 kN24.02
LL469949/LL469910TimkenTapered Roller447.68552.4541.62618 kN20.79
M270749/M270710TimkenTapered Roller447.686356.4--
M270749/M270710CDTimkenTapered Roller447.68635257.185700 kN249.52
M270749/M270720DTimkenTapered Roller447.68649.92257.185700 kN279.4
M270749D/M270710TimkenTapered Roller447.68635223.845700 kN240.64

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