SIFT BEARING STORE CATALOG

LM249748/LM249710CDTimkenTapered Roller

LM249748/LM249710CD is a Timken tapered roller bearing, bore 254 mm, O.D. 347.66 mm, height 95.25 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d254mm
Outside dia. D347.66mm
Overall width T95.25mm
Dynamic Cr1070kN
Weight22.68kg
Mean dia. dm300.8mm

Original catalogue drawing - Timken TRB Catalog, page 578

LM249748/LM249710CD 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. D347.66 mmBore d254 mmOverall width T95.25 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 diameter25410
DOutside diameter347.66213.6875
TOverall assembly width95.253.75
CCup / outer-ring width69.852.75
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)254.000
Bore d (in)10.0000
Outside dia. D (mm)347.662
Outside dia. D (in)13.6875
Overall width T (mm)95.250
Overall width T (in)3.7500
Cup width C (mm)69.850
Cup width C (in)2.7500

Load ratings & speeds

Basic dynamic load rating Cr (lbs)240000
Basic dynamic load rating Cr (N)1070000
Dynamic rating C1 (N, ISO)1070000
Dynamic rating C1 (lbf, ISO)240000
Radial rating C90 (N)159000
Radial rating C90 (lbf)35700
Thrust rating Ca90 (N)90500
Thrust rating Ca90 (lbf)20300
Factor e0.33
Factor Y12.03
Factor Y23.02
Factor K1.76
Geometry factor G11003.8
Geometry factor G2166.1
Geometry factor Cg0.1287

Weight

Weight (kg)22.68

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)1.5
Shaft shoulder db (mm)272.0
Housing shoulder Da (mm)333.0
Pin dimension Ka (mm)15.86
Pin dimension Kb (mm)7.13

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4267,5001023,386
6178,33339213,083
8133,7501,02434,133
10107,0002,15471,814
1571,3338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 1,070,000 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.578 (dimensions)
Series typeTDO

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
29875/29820TimkenTapered Roller254323.8522.23151 kN4.27
29875/29820DTimkenTapered Roller254323.8563.5263 kN11.05
EE134100/134143TimkenTapered Roller254365.1258.74679 kN18.23
EE134100/134144CDTimkenTapered Roller254365.12130.181180 kN39.21
EE134100/134145TimkenTapered Roller254368.358.74679 kN18.85
EE171000D/171400TimkenTapered Roller254355.692.86976 kN27.99
EE171000D/171436TimkenTapered Roller254365.0592.86976 kN30.85
EE171000D/171450TimkenTapered Roller254368.392.86976 kN32.05

Request a quotation for LM249748/LM249710CD

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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