SIFT BEARING STORE CATALOG

1280/1220TimkenTapered Roller

1280/1220 is a Timken tapered roller bearing, bore 22.23 mm, O.D. 57.15 mm, width 22.23 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d22.23mm
Outside dia. D57.15mm
Width B22.23mm
Dynamic Cr55.3kN
Static C0r55.1kN
Weight0.28kg
Cr / C0r1
Mean dia. dm39.7mm

Original catalogue drawing - Timken TRB Catalog, page 92

1280/1220 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. D57.15 mmBore d22.23 mmWidth B22.23 mmCup width C17.46 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 diameter22.2250.875
DOutside diameter57.152.25
BInner-ring / bearing width22.2250.875
TOverall assembly width22.2250.875
CCup / outer-ring width17.4620.6875
rChamfer (min)1.50.0591

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)22.225
Bore d (in)0.8750
Outside dia. D (mm)57.150
Outside dia. D (in)2.2500
Width B (mm)22.225
Overall width T (mm)22.225
Overall width T (in)0.8750
Cup width C (mm)17.462

Load ratings & speeds

Basic dynamic load rating Cr (lbs)12400
Basic static load rating Cor (lbs)12400
Basic dynamic load rating Cr (N)55300
Basic static load rating C0r (N)55100
Dynamic rating C1 (N, ISO)55300
Dynamic rating C1 (lbf, ISO)12400
Radial rating C90 (N)14300
Radial rating C90 (lbf)3230
Thrust rating Ca90 (N)8510
Thrust rating Ca90 (lbf)1910
Static rating C0 (N)55100
Static rating C0 (lbf)12400
Factor e0.35
Factor Y1.73
Factor K1.69
Geometry factor G111.4
Geometry factor G25.5
Geometry factor Cg0.0556
Effective load centre a (mm)-6.9

Weight

Weight (kg)0.28
Cone weight (kg)0.18
Cup weight (kg)0.1
Total weight (kg)0.28

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)0.8
Housing fillet r max (mm)1.5
Shaft shoulder da (mm)29.0
Shaft shoulder db (mm)29.5
Housing shoulder Da (mm)52.0
Housing shoulder Db (mm)49.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
413,8251023,386
69,21739213,083
86,9121,02434,133
105,5302,15471,814
153,6878,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 55,300 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.92 (dimensions) / p.48 (cone) / p.48 (cup)
Series typeTS

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

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
07087/07196TimkenTapered Roller22.2350.0114.2629.1 kN0.12
07087/07204TimkenTapered Roller22.2351.9914.2629.1 kN0.15
07087X/07196TimkenTapered Roller22.2350.0114.2629.1 kN0.12
07087X/07205TimkenTapered Roller22.235214.2629.1 kN0.15
1380/1328TimkenTapered Roller22.2352.3920.1747.9 kN0.2
1380/1329TimkenTapered Roller22.2353.9820.1747.9 kN0.21
1755/1729TimkenTapered Roller22.2356.919.8445.4 kN0.25
1755/1729XTimkenTapered Roller22.2356.919.8445.4 kN0.25

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