SIFT BEARING STORE CATALOG

392/3920TimkenTapered Roller

392/3920 is a Timken tapered roller bearing, bore 61.91 mm, O.D. 112.71 mm, width 22 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d61.91mm
Outside dia. D112.71mm
Width B22mm
Dynamic Cr98.9kN
Static C0r125kN
Weight1.05kg
Cr / C0r0.79
Mean dia. dm87.3mm

Original catalogue drawing - Timken TRB Catalog, page 234

392/3920 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. D112.71 mmBore d61.91 mmWidth B22 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 diameter61.9122.4375
DOutside diameter112.7124.4375
BInner-ring / bearing width21.9960.866
TOverall assembly width26.9671.0617
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)61.912
Bore d (in)2.4375
Outside dia. D (mm)112.712
Outside dia. D (in)4.4375
Width B (mm)21.996
Overall width T (mm)26.967
Overall width T (in)1.0617
Cup width C (mm)23.812

Load ratings & speeds

Basic dynamic load rating Cr (lbs)22200
Basic static load rating Cor (lbs)28100
Basic dynamic load rating Cr (N)98900
Basic static load rating C0r (N)125000
Dynamic rating C1 (N, ISO)98900
Dynamic rating C1 (lbf, ISO)22200
Radial rating C90 (N)25600
Radial rating C90 (lbf)5760
Thrust rating Ca90 (N)17600
Thrust rating Ca90 (lbf)3970
Static rating C0 (N)125000
Static rating C0 (lbf)28100
Factor e0.40
Factor Y1.49
Factor K1.45
Geometry factor G156.0
Geometry factor G221.4
Geometry factor Cg0.0984
Effective load centre a (mm)-0.8

Weight

Weight (kg)1.05

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)0.8
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)69.0
Shaft shoulder db (mm)70.0
Housing shoulder Da (mm)106.0
Housing shoulder Db (mm)99.0
Cage projection Aa (mm)1.7
Cage projection Ab (mm)2.1

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
424,7251023,386
616,48339213,083
812,3621,02434,133
109,8902,15471,814
156,5938,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 98,900 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.234 (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
392/393TimkenTapered Roller61.9111022--
392/394ATimkenTapered Roller61.911102298.9 kN0.86
392/394DTimkenTapered Roller61.9111052.39172 kN1.96

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
554/552TimkenTapered Roller61.91123.8336.68-2.07
554/552ATimkenTapered Roller61.91123.8336.68191 kN2.02
554/552DTimkenTapered Roller61.91123.8379.38332 kN4.19
9178/9120TimkenTapered Roller61.91158.7552.39-4.96
9180/9120TimkenTapered Roller61.91158.7546.04285 kN4.6
9180/9121TimkenTapered Roller61.91152.446.04285 kN3.98
9181/9120TimkenTapered Roller61.91158.7546.04285 kN4.61
9181/9121TimkenTapered Roller61.91152.446.04285 kN3.99

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