SIFT BEARING STORE CATALOG

HM855449/HM855419DTimkenTapered Roller

HM855449/HM855419D is a Timken tapered roller bearing, bore 276.23 mm, O.D. 508 mm, height 190.5 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d276.23mm
Outside dia. D508mm
Overall width T190.5mm
Dynamic Cr2510kN
Weight152.7kg
Mean dia. dm392.1mm

Original catalogue drawing - Timken TRB Catalog, page 584

HM855449/HM855419D 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. D508 mmBore d276.23 mmOverall width T190.5 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 diameter276.22510.875
DOutside diameter50820
TOverall assembly width190.57.5
CCup / outer-ring width1275
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)276.225
Bore d (in)10.8750
Outside dia. D (mm)508.000
Outside dia. D (in)20.0000
Overall width T (mm)190.500
Overall width T (in)7.5000
Cup width C (mm)127.000
Cup width C (in)5.0000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)565000
Basic dynamic load rating Cr (N)2510000
Dynamic rating C1 (N, ISO)2510000
Dynamic rating C1 (lbf, ISO)565000
Radial rating C90 (N)374000
Radial rating C90 (lbf)84100
Thrust rating Ca90 (N)369000
Thrust rating Ca90 (lbf)82900
Factor e0.58
Factor Y11.17
Factor Y21.75
Factor K1.01
Geometry factor G11651.5
Geometry factor G2173.3
Geometry factor Cg0.1824

Weight

Weight (kg)152.7

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)6.4
Housing fillet r max (mm)3.3
Shaft shoulder db (mm)313.0
Housing shoulder Da (mm)430.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
4627,5001023,386
6418,33339213,083
8313,7501,02434,133
10251,0002,15471,814
15167,3338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 2,510,000 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.584 (dimensions)
Series typeTDO

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
89108D/89148TimkenTapered Roller276.2338188.9806 kN29.21
89108D/89150TimkenTapered Roller276.2338188.9806 kN32.47
EE275109D/275155TimkenTapered Roller276.23393.7130.181540 kN49.79
EE275109D/275158TimkenTapered Roller276.23403.23130.181540 kN51.43
L853049/L853010TimkenTapered Roller276.23352.4334.92333 kN7.72
L853048/L853010TimkenTapered Roller275352.433.5-8.33
L853048/L853010WTimkenTapered Roller275352.4340306 kN8.32
EE295110/295192CDTimkenTapered Roller279.4488.952544220 kN183.69

Request a quotation for HM855449/HM855419D

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