SIFT BEARING STORE CATALOG

M249747/M249710TimkenTapered Roller

M249747/M249710 is a Timken tapered roller bearing, bore 257.18 mm, O.D. 358.77 mm, height 161.93 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d257.18mm
Outside dia. D358.77mm
Overall width T161.93mm
Dynamic Cr1450kN
Weight43.67kg
Mean dia. dm308mm

Original catalogue drawing - Timken TRB Catalog, page 696

M249747/M249710 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. D358.77 mmBore d257.18 mmOverall width T161.93 mmCup width C127 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 diameter257.17510.125
DOutside diameter358.77514.125
TOverall assembly width161.9266.375
CCup / outer-ring width1275

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)257.175
Bore d (in)10.1250
Outside dia. D (mm)358.775
Outside dia. D (in)14.1250
Overall width T (mm)161.926
Overall width T (in)6.3750
Cup width C (mm)127.000
Cup width C (in)5.0000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)327000
Basic dynamic load rating Cr (N)1450000
Dynamic rating C1 (N, ISO)1450000
Dynamic rating C1 (lbf, ISO)327000
Radial rating C90 (N)217000
Radial rating C90 (lbf)48700
Thrust rating Ca90 (N)123000
Thrust rating Ca90 (lbf)27700
Factor e0.33
Factor Y12.03
Factor Y23.02
Factor K1.76

Weight

Weight (kg)43.67
Cup weight (kg)6.46

Mounting dimensions (fillets / shoulders)

Shaft shoulder db (mm)272.0
Housing shoulder Da (mm)343.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4362,5001023,386
6241,66739213,083
8181,2501,02434,133
10145,0002,15471,814
1596,6678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,450,000 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.696 (dimensions) / p.150 (cup)
Series typeTS

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
M349549/M349510TimkenTapered Roller257.18342.957.15780 kN13.71
M349549A/M349510TimkenTapered Roller257.18342.957.15780 kN13.4
M349546XX/M349510TimkenTapered Roller255.6342.91.5-14.43
EE221018/221575TimkenTapered Roller258.76400.0567.47949 kN27.08
32052XTimkenTapered Roller260400871320 kN37.84
32252TimkenTapered Roller2604801302490 kN103.96
32952TimkenTapered Roller26036063.5829 kN18.6
29875/29820TimkenTapered Roller254323.8522.23151 kN4.27

Request a quotation for M249747/M249710

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.

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