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TIMKEN / Ts - tapered single

TIMKEN NP177778 / NP363867

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

Technical data available
Bore diameterd
66.675 mm
Outside diameterD
122.238 mm
WidthB
38.1 mm
Dynamic load ratingC
267 kN
Static load ratingC0
279 kN
Mass≈m
1.83 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
SeriesHM212000
Variant / constructionTS - Tapered Single
Bore diameterd66.675 mm
Outside diameterD122.238 mm
WidthB38.1 mm
Basic dynamic load ratingC267 kN
Basic static load ratingC0279 kN
Mass≈m1.83 kg
Calculation Factors6 parameters
Calculation Factors
ParameterSymbolValue
K Factor1.73
Y1 Factor1.78
Y2 Factor-1.00
Y0 Factor0.98
E Factor0.34
Cg Factor0.0759
Manufacturer Identity7 parameters
Manufacturer Identity
ParameterSymbolValue
BrandTimken
Material Number100107742100145769
World Assembly Part NumberNP177778 / NP363867
Inner Ring Part NumberNP177778
Outer Ring Part NumberNP363867
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 Width42.154 mm
Radial Rating69,200 N
Axial Rating40,000 N
Dynamic Rating C1267,000 N
Dynamic Rating C9069,200 N
Dynamic Axial Rating Ca9040,000 N
Dynamic Axial Rating Ca1154,000 N
Static Radial Rating C0279,000 N
Extended Dynamic Rating Ce0 N
Static Axial Rating C0A274,000 N

Technical documents & data sheet

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Record identity
TIMKEN NP177778 / NP363867
Document matching
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