SIFT BEARING STORE CATALOG

750A/742TimkenTapered Roller

750A/742 is a Timken tapered roller bearing, bore 82.55 mm, O.D. 150.09 mm, width 46.67 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d82.55mm
Outside dia. D150.09mm
Width B46.67mm
Dynamic Cr377kN
Static C0r417kN
Weight3.33kg
Cr / C0r0.9
Mean dia. dm116.3mm

Original catalogue drawing - Timken TRB Catalog, page 280

750A/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 d82.55 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 diameter82.553.25
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)82.550
Bore d (in)3.2500
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)3.33

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)6.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)93.0
Shaft shoulder db (mm)106.0
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.280 (dimensions)
Series typeTS

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
749A/742TimkenTapered Roller82.55150.0946.67377 kN3.36

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
27687/27620TimkenTapered Roller82.55125.4125.4117 kN1.07
47685/47620TimkenTapered Roller82.55133.3533.34214 kN1.72
47685/47621TimkenTapered Roller82.55139.9933.34214 kN2.13
47686/47620TimkenTapered Roller82.55133.3533.34214 kN1.71
47686/47621TimkenTapered Roller82.55139.9933.34214 kN2.12
47687/47620TimkenTapered Roller82.55133.3533.34214 kN1.7
495/492ATimkenTapered Roller82.55133.3529.77154 kN1.49
495/493TimkenTapered Roller82.55136.5329.77154 kN1.61

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