SIFT BEARING STORE CATALOG

744A/742TimkenTapered Roller

744A/742 is a Timken tapered roller bearing, bore 69.85 mm, O.D. 150.09 mm, width 46.67 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
Request a quoteEmail usSearch the catalog
Bore d69.85mm
Outside dia. D150.09mm
Width B46.67mm
Dynamic Cr318kN
Static C0r417kN
Weight3.91kg
Cr / C0r0.76
Mean dia. dm110mm

Original catalogue drawing - Timken TRB Catalog, page 258

744A/742 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. D150.09 mmBore d69.85 mmWidth B46.67 mmCup width C36.51 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 diameter69.852.75
DOutside diameter150.0895.909
BInner-ring / bearing width46.6721.8375
TOverall assembly width44.451.75
CCup / outer-ring width36.5121.4375
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)69.850
Bore d (in)2.7500
Outside dia. D (mm)150.089
Outside dia. D (in)5.9090
Width B (mm)46.672
Overall width T (mm)44.450
Overall width T (in)1.7500
Cup width C (mm)36.512

Load ratings & speeds

Basic dynamic load rating Cr (lbs)71400
Basic static load rating Cor (lbs)93800
Basic dynamic load rating Cr (N)318000
Basic static load rating C0r (N)417000
Dynamic rating C1 (N, ISO)318000
Dynamic rating C1 (lbf, ISO)71400
Radial rating C90 (N)82400
Radial rating C90 (lbf)18500
Thrust rating Ca90 (N)45900
Thrust rating Ca90 (lbf)10300
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)3.91
Cone weight (kg)2.82
Cup weight (kg)1.07
Total weight (kg)3.89

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)5.0
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)82.0
Shaft shoulder db (mm)91.0
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
479,5001023,386
653,00039213,083
839,7501,02434,133
1031,8002,15471,814
1521,2008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 318,000 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.258 (dimensions) / p.43 (cone) / p.43 (cup)
Series typeTS

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
745A/742TimkenTapered Roller69.85150.0946.67377 kN3.93

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
744A/742DTimkenTapered Roller69.85155.57101.6553 kN9.32

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
29675/29620TimkenTapered Roller69.85112.7125.4111 kN0.95
29675/29622DTimkenTapered Roller69.85114.2958.74192 kN2.2
29675/29630TimkenTapered Roller69.85120.6525.4111 kN1.16
33275/33461TimkenTapered Roller69.85117.4730.16-1.26
33275/33462TimkenTapered Roller69.85117.4730.16138 kN1.26
33275/33462DTimkenTapered Roller69.85117.4766.67241 kN2.81
33275/33472TimkenTapered Roller69.8512030.16138 kN1.35
47487/47420TimkenTapered Roller69.8512032.55179 kN1.46

Request a quotation for 744A/742

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.