TIMKEN H859049-903A2

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

Technical data available

Bore diameterd: 314.325 mm
Outside diameterD: 495.3 mm
WidthB: 120.65 mm
Dynamic load ratingC: 1960 kN
Static load ratingC0: 3950 kN
Mass≈m: 83.09 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		H859000
Variant / construction		TS - Tapered Single
Bore diameter	d	314.325 mm
Outside diameter	D	495.3 mm
Width	B	120.65 mm
Basic dynamic load rating	C	1960 kN
Basic static load rating	C0	3950 kN
Mass	≈m	83.09 kg
Precision class		ABMA Class 3
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		1.01
Y1 Factor		1.04
Y2 Factor		0.00
Y0 Factor		0.57
E Factor		0.58
Cg Factor		0.2225

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000100099665
World Assembly Part Number		H859049_H859010
Inner Ring Part Number		H859049
Outer Ring Part Number		H859010
Drawing Number		C-27945
Upc		0053893799865
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:47.393

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TS - Tapered Single
Construction		Precision Tapered Roller Bearing Assembly \| Imperial Series \| 12.3750 in Bore \| 19.5000 in OD \| 4.7500 in Width \| Open \| Cylindrical Bore \| Steel Cage \| Precision ABMA Class 3
Number Of Rows		1
Tapered Bore		N

Technical Data10 parameters

Technical Data
Parameter	Symbol	Value
Overall Width		141.162 mm
Radial Rating		508,000 N
Axial Rating		500,000 N
Dynamic Rating C1		1,960,000 N
Dynamic Rating C90		508,000 N
Dynamic Axial Rating Ca90		500,000 N
Dynamic Axial Rating Ca1		1,930,000 N
Static Radial Rating C0		3,950,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		6,630,000 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 H859049-903A2
Document matching: Exact designation, assembly scope, revision and units must agree.

No verified redistributable CAD or manufacturer PDF is registered for this exact model. A catalogue image is not a dimensioned drawing. Missing technical files are not generated or replaced with unrelated models.

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