SIFT BEARING STORE CATALOG

LM300848/LM300811TimkenTapered Roller

LM300848/LM300811 is a Timken tapered roller bearing, bore 41.27 mm, O.D. 67.97 mm, width 18 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d41.27mm
Outside dia. D67.97mm
Width B18mm
Dynamic Cr49.8kN
Static C0r63.5kN
Weight0.24kg
Cr / C0r0.78
Mean dia. dm54.6mm

Original catalogue drawing - Timken TRB Catalog, page 158

LM300848/LM300811 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. D67.97 mmBore d41.27 mmWidth B18 mmCup width C13.5 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 diameter67.9752.6762
BInner-ring / bearing width180.7087
TOverall assembly width17.50.689
CCup / outer-ring width13.50.5315
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)41.275
Bore d (in)1.6250
Outside dia. D (mm)67.975
Outside dia. D (in)2.6762
Width B (mm)18.000
Overall width T (mm)17.500
Overall width T (in)0.6890
Cup width C (mm)13.500

Load ratings & speeds

Basic dynamic load rating Cr (lbs)11200
Basic static load rating Cor (lbs)14300
Basic dynamic load rating Cr (N)49800
Basic static load rating C0r (N)63500
Dynamic rating C1 (N, ISO)49800
Dynamic rating C1 (lbf, ISO)11200
Radial rating C90 (N)12900
Radial rating C90 (lbf)2900
Thrust rating Ca90 (N)7710
Thrust rating Ca90 (lbf)1730
Static rating C0 (N)63500
Static rating C0 (lbf)14300
Factor e0.35
Factor Y1.72
Factor K1.68
Geometry factor G122.5
Geometry factor G218.1
Geometry factor Cg0.0698
Effective load centre a (mm)-3.6

Weight

Weight (kg)0.24
Cone weight (kg)0.16
Cup weight (kg)0.08
Total weight (kg)0.24

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)1.5
Shaft shoulder da (mm)45.5
Shaft shoulder db (mm)52.0
Housing shoulder Da (mm)65.0
Housing shoulder Db (mm)61.0
Cage projection Aa (mm)0.6
Cage projection Ab (mm)1.3

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
412,4501023,386
68,30039213,083
86,2251,02434,133
104,9802,15471,814
153,3208,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 49,800 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.158 (dimensions) / p.177 (cone) / p.177 (cup)
Series typeTS

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

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
22778/22720TimkenTapered Roller41.2782.5526.99-0.65
22778/22721TimkenTapered Roller41.2782.5526.9992.9 kN0.64
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

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