SIFT BEARING STORE CATALOG

M903345/M903310TimkenTapered Roller

M903345/M903310 is a Timken tapered roller bearing, bore 41.27 mm, O.D. 92.08 mm, width 23.81 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d41.27mm
Outside dia. D92.08mm
Width B23.81mm
Dynamic Cr101kN
Static C0r92.5kN
Weight0.76kg
Cr / C0r1.09
Mean dia. dm66.7mm

Original catalogue drawing - Timken TRB Catalog, page 164

M903345/M903310 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. D92.08 mmBore d41.27 mmWidth B23.81 mmCup width C16.67 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 diameter92.0753.625
BInner-ring / bearing width23.8120.9375
TOverall assembly width26.1951.0313
CCup / outer-ring width16.670.6563
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)92.075
Outside dia. D (in)3.6250
Width B (mm)23.812
Overall width T (mm)26.195
Overall width T (in)1.0313
Cup width C (mm)16.670

Load ratings & speeds

Basic dynamic load rating Cr (lbs)22800
Basic static load rating Cor (lbs)20800
Basic dynamic load rating Cr (N)101000
Basic static load rating C0r (N)92500
Dynamic rating C1 (N, ISO)101000
Dynamic rating C1 (lbf, ISO)22800
Radial rating C90 (N)26300
Radial rating C90 (lbf)5910
Thrust rating Ca90 (N)37400
Thrust rating Ca90 (lbf)8410
Static rating C0 (N)92500
Static rating C0 (lbf)20800
Factor e0.83
Factor Y0.72
Factor K0.70
Geometry factor G125.6
Geometry factor G213.1
Geometry factor Cg0.0948
Effective load centre a (mm)3.6

Weight

Weight (kg)0.76
Cone weight (kg)0.55
Cup weight (kg)0.24
Total weight (kg)0.79

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)3.5
Housing fillet r max (mm)1.5
Shaft shoulder da (mm)54.0
Shaft shoulder db (mm)65.0
Housing shoulder Da (mm)88.0
Housing shoulder Db (mm)78.0
Cage projection Aa (mm)4.8
Cage projection Ab (mm)3.4

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
425,2501023,386
616,83339213,083
812,6251,02434,133
1010,1002,15471,814
156,7338,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 101,000 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.164 (dimensions) / p.220 (cone) / p.220 (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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