TIMKEN LM446349-902A2

Tapered roller bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available

Bore diameterd: 234.95 mm
Outside diameterD: 311.15 mm
WidthB: 98.425 mm
Dynamic load ratingC: 768 kN
Static load ratingC0: 1850 kN
Mass≈m: 18.41 kg

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Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications11 parameters

Core specifications
Parameter	Symbol	Value
Series		LM446300
Variant / construction		TDO - Tapered Double Outer
Bore diameter	d	234.95 mm
Outside diameter	D	311.15 mm
Width	B	98.425 mm
Basic dynamic load rating	C	768 kN
Basic static load rating	C0	1850 kN
Mass	≈m	18.41 kg
Precision class		ABMA Class 2
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		1.61
Y1 Factor		1.86
Y2 Factor		2.77
Y0 Factor		1.82
E Factor		0.36
Cg Factor		0.1328

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000100145397
World Assembly Part Number		LM446349_LM446310CD
Inner Ring Part Number		LM446349
Outer Ring Part Number		LM446310CD
Drawing Number		C-51872
Upc		0013992359711
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:47.68

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TDO - Tapered Double Outer
Construction		Double Row Tapered Roller Bearing Assembly \| Imperial Series \| 9.2500 in Bore \| 12.2500 in OD \| 3.8750 in Width \| Open \| Cylindrical Bore \| Steel Cage \| Precision ABMA Class 2
Number Of Rows		2
Tapered Bore		N

Technical Data10 parameters

Technical Data
Parameter	Symbol	Value
Overall Width		0.000 mm
Radial Rating		199,000 N
Axial Rating		70,900 N
Dynamic Rating C1		768,000 N
Dynamic Rating C90		199,000 N
Dynamic Axial Rating Ca90		70,900 N
Dynamic Axial Rating Ca1		274,000 N
Static Radial Rating C0		1,850,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		977,000 N

Technical documents & data sheet

This product page is a BearingScope catalogue reference, not a manufacturer-certified drawing. Preserve the full brand and designation when comparing files.

Record identity: TIMKEN LM446349-902A2
Document matching: Exact designation, assembly scope, revision and units must agree.

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