SIFT BEARING STORE CATALOG

EE776420/776520TimkenTapered Roller

EE776420/776520 is a Timken tapered roller bearing, bore 1066.8 mm, O.D. 1320.8 mm, width 88.9 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d1066.8mm
Outside dia. D1320.8mm
Width B88.9mm
Dynamic Cr2670kN
Static C0r6990kN
Weight268.22kg
Cr / C0r0.38
Mean dia. dm1193.8mm

Original catalogue drawing - Timken TRB Catalog, page 392

EE776420/776520 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. D1320.8 mmBore d1066.8 mmWidth B88.9 mmCup width C69.85 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 diameter1066.842
DOutside diameter1320.852
BInner-ring / bearing width88.93.5
TOverall assembly width95.253.75
CCup / outer-ring width69.852.75
rChamfer (min)6.40.252

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)1066.800
Bore d (in)42.0000
Outside dia. D (mm)1320.800
Outside dia. D (in)52.0000
Width B (mm)88.900
Overall width T (mm)95.250
Overall width T (in)3.7500
Cup width C (mm)69.850

Load ratings & speeds

Basic dynamic load rating Cr (lbs)599000
Basic static load rating Cor (lbs)1570000
Basic dynamic load rating Cr (N)2670000
Basic static load rating C0r (N)6990000
Dynamic rating C1 (N, ISO)2670000
Dynamic rating C1 (lbf, ISO)599000
Radial rating C90 (N)691000
Radial rating C90 (lbf)155000
Thrust rating Ca90 (N)676000
Thrust rating Ca90 (lbf)152000
Static rating C0 (N)6990000
Static rating C0 (lbf)1570000
Factor e0.57
Factor Y1.05
Factor K1.02
Geometry factor G123201.8
Geometry factor G22946.7
Geometry factor Cg0.4231
Effective load centre a (mm)175.8

Weight

Weight (kg)268.22
Cup weight (kg)80.72

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)6.4
Housing fillet r max (mm)6.4
Shaft shoulder da (mm)1115.0
Shaft shoulder db (mm)1115.0
Housing shoulder Da (mm)1273.5
Housing shoulder Db (mm)1260.0
Cage projection Aa (mm)15.5
Cage projection Ab (mm)4.9

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4667,5001023,386
6445,00039213,083
8333,7501,02434,133
10267,0002,15471,814
15178,0008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 2,670,000 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.392 (dimensions) / p.212 (cone) / p.212 (cup)
Series typeTS

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
LL788349/LL788310TimkenTapered Roller1066.81219.265.091720 kN106.72
LL788345/LL788310TimkenTapered Roller1063.621219.265.091720 kN109.42

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