SIFT BEARING STORE CATALOG

377/372ATimkenTapered Roller

377/372A is a Timken tapered roller bearing, bore 52.39 mm, O.D. 96.84 mm, width 22.23 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d52.39mm
Outside dia. D96.84mm
Width B22.23mm
Dynamic Cr104kN
Static C0r101kN
Weight0.69kg
Cr / C0r1.03
Mean dia. dm74.6mm

Original catalogue drawing - Timken TRB Catalog, page 208

377/372A 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. D96.84 mmBore d52.39 mmWidth B22.23 mmCup width C19.05 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 diameter52.3872.0625
DOutside diameter96.8383.8125
BInner-ring / bearing width22.2250.875
TOverall assembly width22.2250.875
CCup / outer-ring width19.050.75
rChamfer (min)1.50.0591

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)52.387
Bore d (in)2.0625
Outside dia. D (mm)96.838
Outside dia. D (in)3.8125
Width B (mm)22.225
Overall width T (mm)22.225
Overall width T (in)0.8750
Cup width C (mm)19.050

Load ratings & speeds

Basic dynamic load rating Cr (lbs)23400
Basic static load rating Cor (lbs)22700
Basic dynamic load rating Cr (N)104000
Basic static load rating C0r (N)101000
Dynamic rating C1 (N, ISO)104000
Dynamic rating C1 (lbf, ISO)23400
Radial rating C90 (N)27000
Radial rating C90 (lbf)6070
Thrust rating Ca90 (N)15700
Thrust rating Ca90 (lbf)3520
Static rating C0 (N)101000
Static rating C0 (lbf)22700
Factor e0.34
Factor Y1.77
Factor K1.73
Geometry factor G137.6
Geometry factor G215.4
Geometry factor Cg0.0816
Effective load centre a (mm)-3.8

Weight

Weight (kg)0.69

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)2.3
Housing fillet r max (mm)1.5
Shaft shoulder da (mm)58.0
Shaft shoulder db (mm)62.0
Housing shoulder Da (mm)90.0
Housing shoulder Db (mm)86.0
Cage projection Aa (mm)0.8
Cage projection Ab (mm)1.5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
426,0001023,386
617,33339213,083
813,0001,02434,133
1010,4002,15471,814
156,9338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 104,000 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.208 (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
377-S/372TimkenTapered Roller51.5910022.23-0.84
377/372TimkenTapered Roller52.3910022.23104 kN0.83
377/3720TimkenTapered Roller52.3993.2622.23104 kN0.69
377/3730TimkenTapered Roller52.3993.2622.23104 kN0.7
377/374TimkenTapered Roller52.3993.2622.23104 kN0.57

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
28584/28520TimkenTapered Roller52.3989.9825.498.9 kN0.62
28584/28521TimkenTapered Roller52.3992.0825.498.9 kN0.66
33890/33821TimkenTapered Roller52.3995.2528.57130 kN0.83
33890/33821DTimkenTapered Roller52.3995.2563.5226 kN1.83
33891/33821TimkenTapered Roller52.3995.2528.57130 kN0.82
33891/33821DTimkenTapered Roller52.3995.2563.5226 kN1.81
3767/3720TimkenTapered Roller52.3993.2630.3122 kN0.83
3767/3729DTimkenTapered Roller52.3993.2665.09213 kN1.78

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