SIFT BEARING STORE CATALOG

745-S/742TimkenTapered Roller

745-S/742 is a Timken tapered roller bearing, bore 63.5 mm, O.D. 150.09 mm, width 46.67 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d63.5mm
Outside dia. D150.09mm
Width B46.67mm
Dynamic Cr377kN
Static C0r417kN
Weight4.17kg
Cr / C0r0.9
Mean dia. dm106.8mm

Original catalogue drawing - Timken TRB Catalog, page 242

745-S/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 d63.5 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 diameter63.52.5
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)63.500
Bore d (in)2.5000
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)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)4.17
Cone weight (kg)3.08
Cup weight (kg)1.07
Total weight (kg)4.15

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)77.0
Shaft shoulder db (mm)84.0
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.242 (dimensions) / p.43 (cone) / p.43 (cup)
Series typeTS

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
745-S/742DTimkenTapered Roller63.5155.57101.6656 kN9.77
745/742TimkenTapered Roller59.93150.0946.67318 kN4.29

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
29585/29520TimkenTapered Roller63.5107.9525.4131 kN0.91
29585/29522TimkenTapered Roller63.5107.9525.4131 kN0.92
29586/29520TimkenTapered Roller63.5107.9525.4131 kN0.92
29586/29521TimkenTapered Roller63.511025.4131 kN0.99
29586/29522TimkenTapered Roller63.5107.9525.4131 kN0.93
29586/29526DTimkenTapered Roller63.5112.7155.56227 kN2.19
29670/29620TimkenTapered Roller63.5112.7125.4-1.09
33251/33461TimkenTapered Roller63.5117.4730.16-1.43

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