SIFT BEARING STORE CATALOG

3782/3720TimkenTapered Roller

3782/3720 is a Timken tapered roller bearing, bore 44.45 mm, O.D. 93.26 mm, width 30.3 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d44.45mm
Outside dia. D93.26mm
Width B30.3mm
Dynamic Cr122kN
Static C0r153kN
Weight0.97kg
Cr / C0r0.8
Mean dia. dm68.9mm

Original catalogue drawing - Timken TRB Catalog, page 172

3782/3720 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. D93.26 mmBore d44.45 mmWidth B30.3 mmCup width C23.81 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 diameter44.451.75
DOutside diameter93.2643.6718
BInner-ring / bearing width30.3021.193
TOverall assembly width30.1621.1875
CCup / outer-ring width23.8120.9375
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)44.450
Bore d (in)1.7500
Outside dia. D (mm)93.264
Outside dia. D (in)3.6718
Width B (mm)30.302
Overall width T (mm)30.162
Overall width T (in)1.1875
Cup width C (mm)23.812

Load ratings & speeds

Basic dynamic load rating Cr (lbs)27500
Basic static load rating Cor (lbs)34300
Basic dynamic load rating Cr (N)122000
Basic static load rating C0r (N)153000
Dynamic rating C1 (N, ISO)122000
Dynamic rating C1 (lbf, ISO)27500
Radial rating C90 (N)31700
Radial rating C90 (lbf)7120
Thrust rating Ca90 (N)18300
Thrust rating Ca90 (lbf)4120
Static rating C0 (N)153000
Static rating C0 (lbf)34300
Factor e0.34
Factor Y1.77
Factor K1.73
Geometry factor G149.9
Geometry factor G214.5
Geometry factor Cg0.0903
Effective load centre a (mm)-8.1

Weight

Weight (kg)0.97

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)52.0
Shaft shoulder db (mm)58.0
Housing shoulder Da (mm)87.9
Housing shoulder Db (mm)82.0
Cage projection Aa (mm)1.8
Cage projection Ab (mm)1.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
430,5001023,386
620,33339213,083
815,2501,02434,133
1012,2002,15471,814
158,1338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 122,000 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.172 (dimensions)
Series typeTS

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
K3782-3720-XLFAGTapered Roller44.4593.2630.3123 kN0.976
3782/3720NSKTapered Roller44.4593.2630.323,200 lbs0.957

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
3782/3726TimkenTapered Roller44.4595.2530.3122 kN1.02
3782/3729DTimkenTapered Roller44.4593.2665.09213 kN2.07
3782/3732TimkenTapered Roller44.4598.4230.3122 kN1.11

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
12175/12303TimkenTapered Roller44.4576.9917.1449.5 kN0.31
13175/13318TimkenTapered Roller44.4580.9617.4650.8 kN0.39
13176D/13318TimkenTapered Roller44.4580.9631.7588.5 kN0.74
17884/17830TimkenTapered Roller44.4579.3833.55-0.52
18685/18620TimkenTapered Roller44.4579.3817.4652 kN0.34
18685/18620DTimkenTapered Roller44.4579.3841.2790.6 kN0.78
25580/25518TimkenTapered Roller44.4581.9725.4-0.53
25580/25519TimkenTapered Roller44.4582.5525.490.5 kN0.55

Request a quotation for 3782/3720

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