TIMKEN NP761790-90KA4

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

Technical data available

Bore diameterd: 320 mm
Outside diameterD: 480 mm
WidthB: 210 mm
Dynamic load ratingC: 3390 kN
Static load ratingC0: 6320 kN
Mass≈m: 120.71 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		EX27928
Variant / construction		TDO - Tapered Double Outer
Bore diameter	d	320 mm
Outside diameter	D	480 mm
Width	B	210 mm
Basic dynamic load rating	C	3390 kN
Basic static load rating	C0	6320 kN
Mass	≈m	120.71 kg
Precision class		ABMA Class K
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		1.27
Y1 Factor		1.47
Y2 Factor		2.19
Y0 Factor		1.44
E Factor		0.46
Cg Factor		0.1960

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000190056372
World Assembly Part Number		NP761790_NP148841
Inner Ring Part Number		NP761790
Outer Ring Part Number		NP148841
Drawing Number		E-52150
Upc		0053893803265
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:46.737

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TDO - Tapered Double Outer
Construction		Double Row Tapered Roller Bearing Assembly \| Imperial Series \| 12.5984 in Bore \| 18.8976 in OD \| 8.2677 in Width \| Open \| Cylindrical Bore \| Steel Cage \| Precision ABMA Class K
Number Of Rows		2
Tapered Bore		N

Technical Data10 parameters

Technical Data
Parameter	Symbol	Value
Overall Width		0.000 mm
Radial Rating		878,000 N
Axial Rating		396,000 N
Dynamic Rating C1		3,390,000 N
Dynamic Rating C90		878,000 N
Dynamic Axial Rating Ca90		396,000 N
Dynamic Axial Rating Ca1		1,530,000 N
Static Radial Rating C0		6,320,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		4,220,000 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 NP761790-90KA4
Document matching: Exact designation, assembly scope, revision and units must agree.

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