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TIMKEN / Ts - tapered single

TIMKEN NP312271 / NP428996

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

Technical data available
Bore diameterd
55 mm
Outside diameterD
90 mm
WidthB
24.999 mm
Dynamic load ratingC
94.9 kN
Static load ratingC0
126 kN
Mass≈m
0.59 kg

Use this page as a technical reference. Verify the current manufacturer specification and the complete application requirements before selection.

Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications8 parameters
Core specifications
ParameterSymbolValue
Series32011X
Variant / constructionTS - Tapered Single
Bore diameterd55 mm
Outside diameterD90 mm
WidthB24.999 mm
Basic dynamic load ratingC94.9 kN
Basic static load ratingC0126 kN
Mass≈m0.59 kg
Calculation Factors6 parameters
Calculation Factors
ParameterSymbolValue
K Factor1.44
Y1 Factor1.48
Y2 Factor-1.00
Y0 Factor0.81
E Factor0.41
Cg Factor0.0931
Manufacturer Identity7 parameters
Manufacturer Identity
ParameterSymbolValue
BrandTimken
Material Number190046118190047322
World Assembly Part NumberNP312271 / NP428996
Inner Ring Part NumberNP312271
Outer Ring Part NumberNP428996
Official Source SystemTS_PREPAIR
Official Last Run2026-08-23T00:00:00
Product Identity3 parameters
Product Identity
ParameterSymbolValue
Type DescriptionTS - Tapered Single
Number Of Rows1
Tapered BoreN
Technical Data10 parameters
Technical Data
ParameterSymbolValue
Overall Width25.500 mm
Radial Rating24,600 N
Axial Rating17,100 N
Dynamic Rating C194,900 N
Dynamic Rating C9024,600 N
Dynamic Axial Rating Ca9017,100 N
Dynamic Axial Rating Ca166,000 N
Static Radial Rating C0126,000 N
Extended Dynamic Rating Ce0 N
Static Axial Rating C0A149,000 N

Technical documents & data sheet

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Record identity
TIMKEN NP312271 / NP428996
Document matching
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