SIFT BEARING STORE CATALOG

JM511946/3920TimkenTapered Roller

JM511946/3920 is a Timken tapered roller bearing, bore 65 mm, O.D. 112.71 mm, width 28 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d65mm
Outside dia. D112.71mm
Width B28mm
Dynamic Cr167kN
Static C0r195kN
Weight1.17kg
Cr / C0r0.86
Mean dia. dm88.9mm

Original catalogue drawing - Timken TRB Catalog, page 244

JM511946/3920 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. D112.71 mmBore d65 mmWidth B28 mmCup width C23.81 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 diameter652.5591
DOutside diameter112.7124.4375
BInner-ring / bearing width281.1024
TOverall assembly width29.021.1425
CCup / outer-ring width23.8120.9375
rChamfer (min)3.30.1299

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)65.000
Bore d (in)2.5591
Outside dia. D (mm)112.712
Outside dia. D (in)4.4375
Width B (mm)28.000
Overall width T (mm)29.020
Overall width T (in)1.1425
Cup width C (mm)23.812

Load ratings & speeds

Basic dynamic load rating Cr (lbs)37600
Basic static load rating Cor (lbs)43900
Basic dynamic load rating Cr (N)167000
Basic static load rating C0r (N)195000
Dynamic rating C1 (N, ISO)167000
Dynamic rating C1 (lbf, ISO)37600
Radial rating C90 (N)43300
Radial rating C90 (lbf)9740
Thrust rating Ca90 (N)29800
Thrust rating Ca90 (lbf)6700
Static rating C0 (N)195000
Static rating C0 (lbf)43900
Factor e0.40
Factor Y1.49
Factor K1.45
Geometry factor G176.3
Geometry factor G223.6
Geometry factor Cg0.1098
Effective load centre a (mm)-3.3

Weight

Weight (kg)1.17

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.0
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)72.0
Shaft shoulder db (mm)78.0
Housing shoulder Da (mm)106.0
Housing shoulder Db (mm)99.0
Cage projection Aa (mm)1.1
Cage projection Ab (mm)2.0

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
441,7501023,386
627,83339213,083
820,8751,02434,133
1016,7002,15471,814
1511,1338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 167,000 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.244 (dimensions)
Series typeTS

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

Series variants (different suffix)

DesignationBrandTypedDB/TDyn. ratingkg
JM511946/JM511910TimkenTapered Roller6511028141 kN1.06

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
30213TimkenTapered Roller6512023138 kN1.14
30313TimkenTapered Roller6514033222 kN2.47
31313TimkenTapered Roller6514033196 kN2.39
32013XTimkenTapered Roller651002398 kN0.64
32213TimkenTapered Roller6512031174 kN1.51
32313TimkenTapered Roller6514048320 kN3.62
33013TimkenTapered Roller6510027107 kN0.74
33113TimkenTapered Roller6511034167 kN1.27

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