SIFT BEARING STORE CATALOG

28995/28921DTimkenTapered Roller

28995/28921D is a Timken tapered roller bearing, bore 62.74 mm, O.D. 100 mm, height 55.56 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d62.74mm
Outside dia. D100mm
Overall width T55.56mm
Dynamic Cr185kN
Weight1.54kg
Mean dia. dm81.4mm

Original catalogue drawing - Timken TRB Catalog, page 534

28995/28921D 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

DdTOutside dia. D100 mmBore d62.74 mmOverall width T55.56 mmCup width C44.45 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 diameter62.7372.47
DOutside diameter1003.937
TOverall assembly width55.562.1874
CCup / outer-ring width44.451.75
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)62.737
Bore d (in)2.4700
Outside dia. D (mm)100.000
Outside dia. D (in)3.9370
Overall width T (mm)55.560
Overall width T (in)2.1874
Cup width C (mm)44.450
Cup width C (in)1.7500

Load ratings & speeds

Basic dynamic load rating Cr (lbs)41500
Basic dynamic load rating Cr (N)185000
Dynamic rating C1 (N, ISO)185000
Dynamic rating C1 (lbf, ISO)41500
Radial rating C90 (N)27500
Radial rating C90 (lbf)6180
Thrust rating Ca90 (N)20000
Thrust rating Ca90 (lbf)4500
Factor e0.43
Factor Y11.59
Factor Y22.36
Factor K1.37
Geometry factor G160.1
Geometry factor G224.5
Geometry factor Cg0.1032

Weight

Weight (kg)1.54

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)0.8
Shaft shoulder db (mm)75.0
Housing shoulder Da (mm)96.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
446,2501023,386
630,83339213,083
823,1251,02434,133
1018,5002,15471,814
1512,3338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 185,000 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.534 (dimensions)
Series typeTDO

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
28995/28919TimkenTapered Roller62.7499.9825.4-0.7
28995/28920TimkenTapered Roller62.74101.625.4106 kN0.73
28995/28921TimkenTapered Roller62.7410025.4106 kN0.69

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
L910349/L910310TimkenTapered Roller63.4994.9815.5--
28990/28919TimkenTapered Roller61.9899.9824.61106 kN0.7
29585/29520TimkenTapered Roller63.5107.9525.4131 kN0.91
29585/29522TimkenTapered Roller63.5107.9525.4131 kN0.92
29586/29520TimkenTapered Roller63.5107.9525.4131 kN0.92
29586/29521TimkenTapered Roller63.511025.4131 kN0.99
29586/29522TimkenTapered Roller63.5107.9525.4131 kN0.93
29586/29526DTimkenTapered Roller63.5112.7155.56227 kN2.19

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