TIMKEN NP390616-90KA1

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

Technical data available

Bore diameterd: 380 mm
Outside diameterD: 620 mm
WidthB: 241 mm
Dynamic load ratingC: 4250 kN
Static load ratingC0: 7750 kN
Mass≈m: 262.65 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		EX27996
Variant / construction		TDO - Tapered Double Outer
Bore diameter	d	380 mm
Outside diameter	D	620 mm
Width	B	241 mm
Basic dynamic load rating	C	4250 kN
Basic static load rating	C0	7750 kN
Mass	≈m	262.65 kg
Precision class		ABMA Class K
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		0.70
Y1 Factor		0.81
Y2 Factor		1.21
Y0 Factor		0.79
E Factor		0.83
Cg Factor		0.2528

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000190029303
World Assembly Part Number		NP390616_NP449748
Inner Ring Part Number		NP390616
Outer Ring Part Number		NP449748
Drawing Number		E-52583
Upc		0013992370174
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:47.4

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TDO - Tapered Double Outer
Construction		Double Row Tapered Roller Bearing Assembly \| Imperial Series \| 14.9606 in Bore \| 24.4094 in OD \| 9.4882 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		1,100,000 N
Axial Rating		900,000 N
Dynamic Rating C1		4,250,000 N
Dynamic Rating C90		1,100,000 N
Dynamic Axial Rating Ca90		900,000 N
Dynamic Axial Rating Ca1		3,470,000 N
Static Radial Rating C0		7,750,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		9,380,000 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 NP390616-90KA1
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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