SIFT BEARING STORE CATALOG

LM12749/LM12711TimkenTapered Roller

LM12749/LM12711 is a Timken tapered roller bearing, bore 21.99 mm, O.D. 45.98 mm, width 16.64 mm. Dimensions, drawing, interchanges and price.

Brass cageCone + cup assembly
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Bore d21.99mm
Outside dia. D45.98mm
Width B16.64mm
Dynamic Cr38.6kN
Static C0r35.3kN
Weight0.12kg
Cr / C0r1.09
Mean dia. dm34mm

Original catalogue drawing - Timken TRB Catalog, page 90

LM12749/LM12711 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. D45.98 mmBore d21.99 mmWidth B16.64 mmCup width C12.06 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 diameter21.9870.8656
DOutside diameter45.9751.81
BInner-ring / bearing width16.6370.655
TOverall assembly width15.4940.61
CCup / outer-ring width12.0650.475
rChamfer (min)1.30.0512

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)21.987
Bore d (in)0.8656
Outside dia. D (mm)45.975
Outside dia. D (in)1.8100
Width B (mm)16.637
Overall width T (mm)15.494
Overall width T (in)0.6100
Cup width C (mm)12.065

Load ratings & speeds

Basic dynamic load rating Cr (lbs)8680
Basic static load rating Cor (lbs)7930
Basic dynamic load rating Cr (N)38600
Basic static load rating C0r (N)35300
Dynamic rating C1 (N, ISO)38600
Dynamic rating C1 (lbf, ISO)8680
Radial rating C90 (N)10000
Radial rating C90 (lbf)2250
Thrust rating Ca90 (N)5250
Thrust rating Ca90 (lbf)1180
Static rating C0 (N)35300
Static rating C0 (lbf)7930
Factor e0.31
Factor Y1.96
Factor K1.91
Geometry factor G18.2
Geometry factor G27.4
Geometry factor Cg0.0480
Effective load centre a (mm)-5.3

Weight

Weight (kg)0.12

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)1.3
Housing fillet r max (mm)1.3
Shaft shoulder da (mm)26.0
Shaft shoulder db (mm)27.5
Housing shoulder Da (mm)42.5
Housing shoulder Db (mm)40.0
Cage projection Aa (mm)0.5
Cage projection Ab (mm)0.5

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
49,6501023,386
66,43339213,083
84,8251,02434,133
103,8602,15471,814
152,5738,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 38,600 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.90 (dimensions)
Series typeTS

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

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
KLM12749-LM12711FAGTapered Roller21.9945.9716.6428 kN0.13
LM12749/LM12711NSKTapered Roller224616.646,570 lbs0.118

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
LM12749/LM12710TimkenTapered Roller21.9945.2416.6438.6 kN0.12

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
1280/1220TimkenTapered Roller22.2357.1522.2355.3 kN0.28
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

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