SIFT BEARING STORE CATALOG

HM911249/HM911210TimkenTapered Roller

HM911249/HM911210 is a Timken tapered roller bearing, bore 61.91 mm, O.D. 130.18 mm, width 33.34 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d61.91mm
Outside dia. D130.18mm
Width B33.34mm
Dynamic Cr198kN
Static C0r183kN
Weight2.03kg
Cr / C0r1.08
Mean dia. dm96mm

Original catalogue drawing - Timken TRB Catalog, page 234

HM911249/HM911210 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. D130.18 mmBore d61.91 mmWidth B33.34 mmCup width C23.81 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 diameter61.9122.4375
DOutside diameter130.1755.125
BInner-ring / bearing width33.3381.3125
TOverall assembly width36.5121.4375
CCup / outer-ring width23.8120.9375
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)61.912
Bore d (in)2.4375
Outside dia. D (mm)130.175
Outside dia. D (in)5.1250
Width B (mm)33.338
Overall width T (mm)36.512
Overall width T (in)1.4375
Cup width C (mm)23.812

Load ratings & speeds

Basic dynamic load rating Cr (lbs)44400
Basic static load rating Cor (lbs)41100
Basic dynamic load rating Cr (N)198000
Basic static load rating C0r (N)183000
Dynamic rating C1 (N, ISO)198000
Dynamic rating C1 (lbf, ISO)44400
Radial rating C90 (N)51200
Radial rating C90 (lbf)11500
Thrust rating Ca90 (N)71900
Thrust rating Ca90 (lbf)16200
Static rating C0 (N)183000
Static rating C0 (lbf)41100
Factor e0.82
Factor Y0.73
Factor K0.71
Geometry factor G156.4
Geometry factor G216.5
Geometry factor Cg0.0842
Effective load centre a (mm)5.3

Weight

Weight (kg)2.03
Cone weight (kg)1.36
Cup weight (kg)0.67
Total weight (kg)2.03

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)74.0
Shaft shoulder db (mm)91.0
Housing shoulder Da (mm)123.6
Housing shoulder Db (mm)109.0
Cage projection Aa (mm)7.3
Cage projection Ab (mm)4.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
449,5001023,386
633,00039213,083
824,7501,02434,133
1019,8002,15471,814
1513,2008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 198,000 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.234 (dimensions) / p.220 (cone) / p.220 (cup)
Series typeTS

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
392/3920TimkenTapered Roller61.91112.712298.9 kN1.05
392/393TimkenTapered Roller61.9111022--
392/394ATimkenTapered Roller61.911102298.9 kN0.86
392/394DTimkenTapered Roller61.9111052.39172 kN1.96
554/552TimkenTapered Roller61.91123.8336.68-2.07
554/552ATimkenTapered Roller61.91123.8336.68191 kN2.02
554/552DTimkenTapered Roller61.91123.8379.38332 kN4.19
9178/9120TimkenTapered Roller61.91158.7552.39-4.96

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