TIMKEN NP330975-902A1

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

Technical data available

Bore diameterd: 149.225 mm
Outside diameterD: 241.3 mm
WidthB: 131.762 mm
Dynamic load ratingC: 1230 kN
Static load ratingC0: 1860 kN
Mass≈m: 21.06 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		HM231100
Variant / construction		TDO - Tapered Double Outer
Bore diameter	d	149.225 mm
Outside diameter	D	241.3 mm
Width	B	131.762 mm
Basic dynamic load rating	C	1230 kN
Basic static load rating	C0	1860 kN
Mass	≈m	21.06 kg
Precision class		ABMA Class 2
Sealing		Open
Cage		Steel cage

Calculation Factors6 parameters

Calculation Factors
Parameter	Symbol	Value
K Factor		1.83
Y1 Factor		2.12
Y2 Factor		3.15
Y0 Factor		2.07
E Factor		0.32
Cg Factor		0.1327

Manufacturer Identity9 parameters

Manufacturer Identity
Parameter	Symbol	Value
Brand		Timken
Material Number		000000000190049729
World Assembly Part Number		NP330975_HM231116D
Inner Ring Part Number		NP330975
Outer Ring Part Number		HM231116D
Drawing Number		C-107542
Upc		0013992419361
Official Source System		CORE BP - DS DF
Official Last Run		2026-08-23T20:02:47.383

Product Identity4 parameters

Product Identity
Parameter	Symbol	Value
Type Description		TDO - Tapered Double Outer
Construction		Double Row Tapered Roller Bearing Assembly \| Imperial Series \| 5.8750 in Bore \| 9.5000 in OD \| 5.1875 in Width \| Open \| Cylindrical Bore \| Steel Cage \| Precision ABMA Class 2
Number Of Rows		2
Tapered Bore		N

Technical Data10 parameters

Technical Data
Parameter	Symbol	Value
Overall Width		0.000 mm
Radial Rating		319,000 N
Axial Rating		100,000 N
Dynamic Rating C1		1,230,000 N
Dynamic Rating C90		319,000 N
Dynamic Axial Rating Ca90		100,000 N
Dynamic Axial Rating Ca1		386,000 N
Static Radial Rating C0		1,860,000 N
Extended Dynamic Rating Ce		0 N
Static Axial Rating C0A		866,000 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 NP330975-902A1
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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