SIFT BEARING STORE CATALOG

LM770949/LM770910TimkenTapered Roller

LM770949/LM770910 is a Timken tapered roller bearing, bore 457.2 mm, O.D. 603.25 mm, width 84.14 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d457.2mm
Outside dia. D603.25mm
Width B84.14mm
Dynamic Cr1490kN
Static C0r3440kN
Weight59.95kg
Cr / C0r0.43
Mean dia. dm530.2mm

Original catalogue drawing - Timken TRB Catalog, page 380

LM770949/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 d457.2 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 diameter457.218
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)457.200
Bore d (in)18.0000
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)59.95
Cone weight (kg)43.34
Cup weight (kg)17.94
Total weight (kg)61.28

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)6.4
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)479.0
Shaft shoulder db (mm)489.0
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.380 (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
671800/672873TimkenTapered Roller457.2730.159.7--
80180/80217TimkenTapered Roller457.2552.4544.45626 kN18.9
EE244180/244235TimkenTapered Roller457.2596.973.031410 kN49.51
EE244180/244236CDTimkenTapered Roller457.2596.9165.12460 kN105.7
EE244181D/244235TimkenTapered Roller457.2596.9130.182460 kN92.2
EE423181D/423300TimkenTapered Roller457.2761.87209.556040 kN413.25
EE480181D/480340TimkenTapered Roller457.2863.5368.310800 kN978.97
EE525183D/525320TimkenTapered Roller457.2812.8342.98610 kN741.07

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