SIFT BEARING STORE CATALOG

M348449/M348410TimkenTapered Roller

M348449/M348410 is a Timken tapered roller bearing, bore 247.65 mm, O.D. 346.07 mm, width 63.5 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d247.65mm
Outside dia. D346.07mm
Width B63.5mm
Dynamic Cr850kN
Static C0r1620kN
Weight17.6kg
Cr / C0r0.52
Mean dia. dm296.9mm

Original catalogue drawing - Timken TRB Catalog, page 352

M348449/M348410 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. D346.07 mmBore d247.65 mmWidth B63.5 mmCup width C50.8 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 diameter247.659.75
DOutside diameter346.07513.625
BInner-ring / bearing width63.52.5
TOverall assembly width63.52.5
CCup / outer-ring width50.82
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)247.650
Bore d (in)9.7500
Outside dia. D (mm)346.075
Outside dia. D (in)13.6250
Width B (mm)63.500
Overall width T (mm)63.500
Overall width T (in)2.5000
Cup width C (mm)50.800

Load ratings & speeds

Basic dynamic load rating Cr (lbs)191000
Basic static load rating Cor (lbs)365000
Basic dynamic load rating Cr (N)850000
Basic static load rating C0r (N)1620000
Dynamic rating C1 (N, ISO)850000
Dynamic rating C1 (lbf, ISO)191000
Radial rating C90 (N)220000
Radial rating C90 (lbf)49500
Thrust rating Ca90 (N)130000
Thrust rating Ca90 (lbf)29100
Static rating C0 (N)1620000
Static rating C0 (lbf)365000
Factor e0.34
Factor Y1.75
Factor K1.70
Geometry factor G11450.8
Geometry factor G2212.9
Geometry factor Cg0.1483
Effective load centre a (mm)-1.3

Weight

Weight (kg)17.6

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)6.4
Housing fillet r max (mm)6.4
Shaft shoulder da (mm)263.0
Shaft shoulder db (mm)273.0
Housing shoulder Da (mm)332.0
Housing shoulder Db (mm)321.0
Cage projection Aa (mm)4.0
Cage projection Ab (mm)3.7

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4212,5001023,386
6141,66739213,083
8106,2501,02434,133
1085,0002,15471,814
1556,6678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 850,000 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.352 (dimensions)
Series typeTS

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
28880/28820TimkenTapered Roller247.65304.822.23157 kN3.18
EE170975/171400TimkenTapered Roller247.65355.650.8643 kN14.44
EE170975/171436TimkenTapered Roller247.65365.0550.8643 kN15.83
EE170975/171451CDTimkenTapered Roller247.65368.3120.651120 kN37.51
HH249949/HH249910TimkenTapered Roller247.65406.4117.472080 kN60.6
HH249949/HH249910CDTimkenTapered Roller247.65406.4247.653620 kN125.39
HH249949H/HH249910TimkenTapered Roller247.65406.4117.472470 kN60.55
M252337/M252310TimkenTapered Roller247.6538174.611150 kN30.51

Request a quotation for M348449/M348410

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