SIFT BEARING STORE CATALOG

33890/33821TimkenTapered Roller

33890/33821 is a Timken tapered roller bearing, bore 52.39 mm, O.D. 95.25 mm, width 28.57 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d52.39mm
Outside dia. D95.25mm
Width B28.57mm
Dynamic Cr130kN
Static C0r161kN
Weight0.83kg
Cr / C0r0.81
Mean dia. dm73.8mm

Original catalogue drawing - Timken TRB Catalog, page 208

33890/33821 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. D95.25 mmBore d52.39 mmWidth B28.57 mmCup width C22.23 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 diameter95.253.75
BInner-ring / bearing width28.5751.125
TOverall assembly width27.7831.0938
CCup / outer-ring width22.2250.875
rChamfer (min)2.30.0906

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)95.250
Outside dia. D (in)3.7500
Width B (mm)28.575
Overall width T (mm)27.783
Overall width T (in)1.0938
Cup width C (mm)22.225

Load ratings & speeds

Basic dynamic load rating Cr (lbs)29200
Basic static load rating Cor (lbs)36200
Basic dynamic load rating Cr (N)130000
Basic static load rating C0r (N)161000
Dynamic rating C1 (N, ISO)130000
Dynamic rating C1 (lbf, ISO)29200
Radial rating C90 (N)33600
Radial rating C90 (lbf)7560
Thrust rating Ca90 (N)19000
Thrust rating Ca90 (lbf)4270
Static rating C0 (N)161000
Static rating C0 (lbf)36200
Factor e0.33
Factor Y1.82
Factor K1.77
Geometry factor G152.5
Geometry factor G218.5
Geometry factor Cg0.0910
Effective load centre a (mm)-7.6

Weight

Weight (kg)0.83
Cone weight (kg)0.56
Cup weight (kg)0.26
Total weight (kg)0.82

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)1.5
Housing fillet r max (mm)2.3
Shaft shoulder da (mm)59.0
Shaft shoulder db (mm)61.0
Housing shoulder Da (mm)90.0
Housing shoulder Db (mm)85.0
Cage projection Aa (mm)1.3
Cage projection Ab (mm)2.2

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
432,5001023,386
621,66739213,083
816,2501,02434,133
1013,0002,15471,814
158,6678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 130,000 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) / p.85 (cone) / p.84 (cup)
Series typeTS

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
33891/33821TimkenTapered Roller52.3995.2528.57130 kN0.82

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
33890/33821DTimkenTapered Roller52.3995.2563.5226 kN1.83

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
28584/28520TimkenTapered Roller52.3989.9825.498.9 kN0.62
28584/28521TimkenTapered Roller52.3992.0825.498.9 kN0.66
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
3767/3730TimkenTapered Roller52.3993.2630.3122 kN0.84
377/372TimkenTapered Roller52.3910022.23104 kN0.83

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