SIFT BEARING STORE CATALOG

M270730/M270710CDTimkenTapered Roller

M270730/M270710CD is a Timken tapered roller bearing, bore 409.57 mm, O.D. 635 mm, height 257.18 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d409.57mm
Outside dia. D635mm
Overall width T257.18mm
Dynamic Cr5700kN
Weight299.3kg
Mean dia. dm522.3mm

Original catalogue drawing - Timken TRB Catalog, page 596

M270730/M270710CD 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

DdTOutside dia. D635 mmBore d409.57 mmOverall width T257.18 mmCup width C206.38 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 diameter409.57516.125
DOutside diameter63525
TOverall assembly width257.17510.125
CCup / outer-ring width206.3758.125
rChamfer (min)1.50.0591

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)409.575
Bore d (in)16.1250
Outside dia. D (mm)635.000
Outside dia. D (in)25.0000
Overall width T (mm)257.175
Overall width T (in)10.1250
Cup width C (mm)206.375
Cup width C (in)8.1250

Load ratings & speeds

Basic dynamic load rating Cr (lbs)1280000
Basic dynamic load rating Cr (N)5700000
Dynamic rating C1 (N, ISO)5700000
Dynamic rating C1 (lbf, ISO)1280000
Radial rating C90 (N)849000
Radial rating C90 (lbf)191000
Thrust rating Ca90 (N)484000
Thrust rating Ca90 (lbf)109000
Factor e0.33
Factor Y12.03
Factor Y23.02
Factor K1.76
Geometry factor G16865.6
Geometry factor G2481.9
Geometry factor Cg0.2458

Weight

Weight (kg)299.3

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)6.4
Housing fillet r max (mm)1.5
Shaft shoulder db (mm)456.0
Housing shoulder Da (mm)605.1
Pin dimension Ka (mm)28.58
Pin dimension Kb (mm)15.09

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
41,425,0001023,386
6950,00039213,083
8712,5001,02434,133
10570,0002,15471,814
15380,0008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 5,700,000 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.596 (dimensions)
Series typeTDO

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
M270730/M270710TimkenTapered Roller409.576356.4--

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
EE285162/285226TimkenTapered Roller409.57574.6767.871110 kN51.79
M268744WS/M268710TimkenTapered Roller409.57590.556.4--
M667947/M667910TimkenTapered Roller409.57546.16.4--
M667947D/M667911TimkenTapered Roller409.57546.1161.932940 kN105.61
M667948/M667911TimkenTapered Roller409.57546.187.311690 kN53.65
EE911618/912400TimkenTapered Roller411.16609.684.141840 kN77.16
EE911618/912401DTimkenTapered Roller411.16609.6187.323210 kN156.34
EE234160/234213CDTimkenTapered Roller406.4539.75142.881890 kN75.55

Request a quotation for M270730/M270710CD

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.

Online enquiry formrichard@bearingsfit.com