TIMKEN NP655478-902A2

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

Technical data available

Bore diameterd: 342.862 mm
Outside diameterD: 507.975 mm
WidthB: 82.55 mm
Dynamic load ratingC: 1300 kN
Static load ratingC0: 2090 kN
Mass≈m: 54.56 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		EX28053
Variant / construction		TS - Tapered Single
Bore diameter	d	342.862 mm
Outside diameter	D	507.975 mm
Width	B	82.55 mm
Basic dynamic load rating	C	1300 kN
Basic static load rating	C0	2090 kN
Mass	≈m	54.56 kg
Precision class		ABMA Class 2
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		0.69
Y1 Factor		0.71
Y2 Factor		0.00
Y0 Factor		0.39
E Factor		0.84
Cg Factor		0.2148

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000190033764
World Assembly Part Number		NP655478_NP922221
Inner Ring Part Number		NP655478
Outer Ring Part Number		NP922221
Drawing Number		E-53305
Upc		0053893820323
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:46.733

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TS - Tapered Single
Construction		Single Row Tapered Roller Bearing Assembly \| Imperial Series \| 13.4985 in Bore \| 19.9990 in OD \| 3.2500 in Width \| Open \| Cylindrical Bore \| Steel Cage \| Precision ABMA Class 2
Number Of Rows		1
Tapered Bore		N

Technical Data10 parameters

Technical Data
Parameter	Symbol	Value
Overall Width		83.850 mm
Radial Rating		336,000 N
Axial Rating		486,000 N
Dynamic Rating C1		1,300,000 N
Dynamic Rating C90		336,000 N
Dynamic Axial Rating Ca90		486,000 N
Dynamic Axial Rating Ca1		1,870,000 N
Static Radial Rating C0		2,090,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		5,120,000 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 NP655478-902A2
Document matching: Exact designation, assembly scope, revision and units must agree.

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