TIMKEN 8573-903A6

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

Technical data available

Bore diameterd: 228.6 mm
Outside diameterD: 327.025 mm
WidthB: 25.4 mm
Dynamic load ratingC: 558 kN
Static load ratingC0: 1070 kN
Mass≈m: 13.64 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		8500
Variant / construction		TSF - Tapered Single Flanged
Bore diameter	d	228.6 mm
Outside diameter	D	327.025 mm
Width	B	25.4 mm
Basic dynamic load rating	C	558 kN
Basic static load rating	C0	1070 kN
Mass	≈m	13.64 kg
Precision class		ABMA Class 3
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		1.44
Y1 Factor		1.48
Y2 Factor		0.00
Y0 Factor		0.81
E Factor		0.41
Cg Factor		0.1401

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000100036181
World Assembly Part Number		8573_8520-B
Inner Ring Part Number		8573
Outer Ring Part Number		8520-B
Drawing Number		C-30615
Upc		0053893385822
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		TSF - Tapered Single Flanged
Construction		Single Row Tapered Roller Bearing Assembly \| Imperial Series \| 9.0000 in Bore \| 12.8750 in OD \| 2.0625 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		55.688 mm
Radial Rating		145,000 N
Axial Rating		101,000 N
Dynamic Rating C1		558,000 N
Dynamic Rating C90		145,000 N
Dynamic Axial Rating Ca90		101,000 N
Dynamic Axial Rating Ca1		389,000 N
Static Radial Rating C0		1,070,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		1,260,000 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 8573-903A6
Document matching: Exact designation, assembly scope, revision and units must agree.

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