SIFT BEARING STORE CATALOG

389A/382ATimkenTapered Roller

389A/382A is a Timken tapered roller bearing, bore 53.98 mm, O.D. 96.84 mm, width 21.95 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d53.98mm
Outside dia. D96.84mm
Width B21.95mm
Dynamic Cr108kN
Static C0r107kN
Weight0.64kg
Cr / C0r1.01
Mean dia. dm75.4mm

Original catalogue drawing - Timken TRB Catalog, page 210

389A/382A 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 d53.98 mmWidth B21.95 mmCup width C15.88 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 diameter53.9752.125
DOutside diameter96.8383.8125
BInner-ring / bearing width21.9460.864
TOverall assembly width210.8268
CCup / outer-ring width15.8750.625
rChamfer (min)0.80.0315

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)53.975
Bore d (in)2.1250
Outside dia. D (mm)96.838
Outside dia. D (in)3.8125
Width B (mm)21.946
Overall width T (mm)21.000
Overall width T (in)0.8268
Cup width C (mm)15.875

Load ratings & speeds

Basic dynamic load rating Cr (lbs)24200
Basic static load rating Cor (lbs)24100
Basic dynamic load rating Cr (N)108000
Basic static load rating C0r (N)107000
Dynamic rating C1 (N, ISO)108000
Dynamic rating C1 (lbf, ISO)24200
Radial rating C90 (N)28000
Radial rating C90 (lbf)6280
Thrust rating Ca90 (N)16900
Thrust rating Ca90 (lbf)3810
Static rating C0 (N)107000
Static rating C0 (lbf)24100
Factor e0.35
Factor Y1.69
Factor K1.65
Geometry factor G142.0
Geometry factor G215.7
Geometry factor Cg0.0859
Effective load centre a (mm)-3.0

Weight

Weight (kg)0.64

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)0.8
Housing fillet r max (mm)0.8
Shaft shoulder da (mm)60.0
Shaft shoulder db (mm)61.0
Housing shoulder Da (mm)92.0
Housing shoulder Db (mm)89.0
Cage projection Aa (mm)1.1
Cage projection Ab (mm)2.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
427,0001023,386
618,00039213,083
813,5001,02434,133
1010,8002,15471,814
157,2008,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 108,000 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.210 (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
389A/382TimkenTapered Roller53.9898.4221.95108 kN0.69
389A/384DTimkenTapered Roller53.9810052.39188 kN1.6
389A/384EDTimkenTapered Roller53.9810049.2188 kN1.52

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
33895/33821TimkenTapered Roller53.9895.2528.57130 kN0.8
33895/33821DTimkenTapered Roller53.9895.2563.5226 kN1.75
33895/33822TimkenTapered Roller53.9895.2528.57130 kN0.81
39578/39520TimkenTapered Roller53.98112.7130.16167 kN1.44
45287/45220TimkenTapered Roller53.98104.7830.96153 kN1.16
45287/45221TimkenTapered Roller53.98104.7830.96153 kN1.16
456/452TimkenTapered Roller53.98107.9529.32-1.27
456/452ATimkenTapered Roller53.98107.9529.32161 kN1.27

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