SIFT BEARING STORE CATALOG

749/743TimkenTapered Roller

749/743 is a Timken tapered roller bearing, bore 85.03 mm, O.D. 150 mm, width 46.67 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d85.03mm
Outside dia. D150mm
Width B46.67mm
Dynamic Cr377kN
Static C0r417kN
Weight3.21kg
Cr / C0r0.9
Mean dia. dm117.5mm

Original catalogue drawing - Timken TRB Catalog, page 284

749/743 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. D150 mmBore d85.03 mmWidth B46.67 mmCup width C35 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 diameter85.0253.3474
DOutside diameter1505.9055
BInner-ring / bearing width46.6721.8375
TOverall assembly width44.4551.7502
CCup / outer-ring width351.378
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)85.025
Bore d (in)3.3475
Outside dia. D (mm)150.000
Outside dia. D (in)5.9055
Width B (mm)46.672
Overall width T (mm)44.455
Overall width T (in)1.7502
Cup width C (mm)35.000

Load ratings & speeds

Basic dynamic load rating Cr (lbs)84700
Basic static load rating Cor (lbs)93800
Basic dynamic load rating Cr (N)377000
Basic static load rating C0r (N)417000
Dynamic rating C1 (N, ISO)377000
Dynamic rating C1 (lbf, ISO)84700
Radial rating C90 (N)97600
Radial rating C90 (lbf)21900
Thrust rating Ca90 (N)54400
Thrust rating Ca90 (lbf)12200
Static rating C0 (N)417000
Static rating C0 (lbf)93800
Factor e0.33
Factor Y1.84
Factor K1.80
Geometry factor G1159.6
Geometry factor G226.3
Geometry factor Cg0.0898
Effective load centre a (mm)-11.9

Weight

Weight (kg)3.21

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)95.0
Shaft shoulder db (mm)101.0
Housing shoulder Da (mm)142.0
Housing shoulder Db (mm)134.0
Cage projection Aa (mm)1.8
Cage projection Ab (mm)1.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
494,2501023,386
662,83339213,083
847,1251,02434,133
1037,7002,15471,814
1525,1338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 377,000 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.284 (dimensions)
Series typeTS

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
749-S/742TimkenTapered Roller85.03150.0946.67377 kN3.23
749/742TimkenTapered Roller85.03150.0946.67377 kN3.26
749/742DTimkenTapered Roller85.03155.57101.6656 kN7.89

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30217TimkenTapered Roller8515028199 kN2.07
30317TimkenTapered Roller8518041313 kN4.78
31317TimkenTapered Roller8518041284 kN4.97
32217TimkenTapered Roller8515036245 kN2.62
32317TimkenTapered Roller8518060481 kN7.24
33017TimkenTapered Roller8513036220 kN1.73
33117TimkenTapered Roller8514041254 kN2.45
33217TimkenTapered Roller8515049351 kN3.6

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