SIFT BEARING STORE CATALOG

22778/22721TimkenTapered Roller

22778/22721 is a Timken tapered roller bearing, bore 41.27 mm, O.D. 82.55 mm, width 26.99 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d41.27mm
Outside dia. D82.55mm
Width B26.99mm
Dynamic Cr92.9kN
Static C0r115kN
Weight0.64kg
Cr / C0r0.81
Mean dia. dm61.9mm

Original catalogue drawing - Timken TRB Catalog, page 160

22778/22721 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. D82.55 mmBore d41.27 mmWidth B26.99 mmCup width C20.64 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 diameter41.2751.625
DOutside diameter82.553.25
BInner-ring / bearing width26.9881.0625
TOverall assembly width26.1951.0313
CCup / outer-ring width20.6380.8125
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)41.275
Bore d (in)1.6250
Outside dia. D (mm)82.550
Outside dia. D (in)3.2500
Width B (mm)26.988
Overall width T (mm)26.195
Overall width T (in)1.0313
Cup width C (mm)20.638

Load ratings & speeds

Basic dynamic load rating Cr (lbs)20900
Basic static load rating Cor (lbs)25800
Basic dynamic load rating Cr (N)92900
Basic static load rating C0r (N)115000
Dynamic rating C1 (N, ISO)92900
Dynamic rating C1 (lbf, ISO)20900
Radial rating C90 (N)24100
Radial rating C90 (lbf)5420
Thrust rating Ca90 (N)16600
Thrust rating Ca90 (lbf)3730
Static rating C0 (N)115000
Static rating C0 (lbf)25800
Factor e0.40
Factor Y1.49
Factor K1.45
Geometry factor G133.9
Geometry factor G215.3
Geometry factor Cg0.0841
Effective load centre a (mm)-6.4

Weight

Weight (kg)0.64

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)0.8
Shaft shoulder da (mm)49.0
Shaft shoulder db (mm)55.0
Housing shoulder Da (mm)77.0
Housing shoulder Db (mm)73.0
Cage projection Aa (mm)1.8
Cage projection Ab (mm)1.1

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
423,2251023,386
615,48339213,083
811,6121,02434,133
109,2902,15471,814
156,1938,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 92,900 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.160 (dimensions)
Series typeTS

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

Same dimensions, same brand

DesignationBrandTypedDB/TDyn. ratingkg
22778/22720TimkenTapered Roller41.2782.5526.99-0.65

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
22778/22720TimkenTapered Roller41.2782.5526.99-0.65

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
11162/11300TimkenTapered Roller41.2776.217.3848.1 kN0.34
11162/11315TimkenTapered Roller41.278017.3848.1 kN0.39
18590/18520TimkenTapered Roller41.2773.0317.4650.8 kN0.28
24780/24720TimkenTapered Roller41.2776.223.0275.5 kN0.43
24780/24721TimkenTapered Roller41.2776.223.0275.5 kN0.47
24780/24722TimkenTapered Roller41.2776.223.0275.5 kN0.42
24781/24720TimkenTapered Roller41.2776.223.0275.5 kN0.43
24781/24721TimkenTapered Roller41.2776.223.0275.5 kN0.47

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