SIFT BEARING STORE CATALOG

74550/74851CDTimkenTapered Roller

74550/74851CD is a Timken tapered roller bearing, bore 139.7 mm, O.D. 215.9 mm, height 106.36 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d139.7mm
Outside dia. D215.9mm
Overall width T106.36mm
Dynamic Cr665kN
Weight12.73kg
Mean dia. dm177.8mm

Original catalogue drawing - Timken TRB Catalog, page 562

74550/74851CD 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. D215.9 mmBore d139.7 mmOverall width T106.36 mmCup width C80.96 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 diameter139.75.5
DOutside diameter215.98.5
TOverall assembly width106.3624.1875
CCup / outer-ring width80.9623.1875
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)139.700
Bore d (in)5.5000
Outside dia. D (mm)215.900
Outside dia. D (in)8.5000
Overall width T (mm)106.362
Overall width T (in)4.1875
Cup width C (mm)80.962
Cup width C (in)3.1875

Load ratings & speeds

Basic dynamic load rating Cr (lbs)150000
Basic dynamic load rating Cr (N)665000
Dynamic rating C1 (N, ISO)665000
Dynamic rating C1 (lbf, ISO)150000
Radial rating C90 (N)99000
Radial rating C90 (lbf)22300
Thrust rating Ca90 (N)82600
Thrust rating Ca90 (lbf)18600
Factor e0.49
Factor Y11.38
Factor Y22.06
Factor K1.20
Geometry factor G1362.9
Geometry factor G268.5
Geometry factor Cg0.1338

Weight

Weight (kg)12.73

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)1.5
Shaft shoulder db (mm)158.0
Housing shoulder Da (mm)208.0
Pin dimension Ka (mm)19.05
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
4166,2501023,386
6110,83339213,083
883,1251,02434,133
1066,5002,15471,814
1544,3338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 665,000 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.562 (dimensions)
Series typeTDO

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
74550A/74851CDTimkenTapered Roller139.7215.9106.36665 kN12.71

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
74550/74845TimkenTapered Roller139.7214.9747.62382 kN5.86
74550/74850TimkenTapered Roller139.7215.947.62382 kN5.97

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
48680D/48620TimkenTapered Roller139.7200.0375.41499 kN8.13
73551/73875TimkenTapered Roller139.7222.2531.62293 kN4.29
73551/73876CDTimkenTapered Roller139.7222.2575.69510 kN9.36
74550A/74850TimkenTapered Roller139.7215.947.62382 kN5.96
74550A/74851CDTimkenTapered Roller139.7215.9106.36665 kN12.71
750550/751200TimkenTapered Roller139.7304.83.3--
82550/82931TimkenTapered Roller139.7236.543.5-9.87
82550/82951CDTimkenTapered Roller139.7241.3131.76897 kN23.09

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