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TIMKEN / Cylindrical 1-row

TIMKEN NJ18/670EMA

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

Technical data available
Bore diameterd
670 mm
Outside diameterD
820 mm
WidthB
69 mm
Dynamic load ratingC
1350 kN
Static load ratingC0
2850 kN
Mass≈m
76.2 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 specifications10 parameters
Core specifications
ParameterSymbolValue
SeriesEX27873
Variant / constructionCylindrical 1-Row
Bore diameterd670 mm
Outside diameterD820 mm
WidthB69 mm
Basic dynamic load ratingC1350 kN
Basic static load ratingC02850 kN
Mass≈m76.2 kg
SealingOpen
CageWindow Brass cage
Calculation Factors6 parameters
Calculation Factors
ParameterSymbolValue
K Factor0.00
Y1 Factor0.00
Y2 Factor0.00
Y0 Factor0.00
E Factor0.00
Cg Factor0.2756
Manufacturer Identity9 parameters
Manufacturer Identity
ParameterSymbolValue
BrandTimken
Material Number000000000190023795
World Assembly Part NumberNJ18/670EMA
Inner Ring Part Number670ARJE18
Outer Ring Part Number670ERUE18
Drawing NumberM942762
Upc0053893320106
Official Source SystemCORE BP - DS DF
Official Last Run2026-08-23T20:02:48.51
Product Identity4 parameters
Product Identity
ParameterSymbolValue
Type DescriptionCylindrical 1-Row
ConstructionSingle Row Cylindrical Roller Bearing | Imperial Series | 26.3780 in Bore | 32.2835 in OD | 2.7165 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C0 Clearance
Number Of Rows1
Tapered BoreN
Technical Data10 parameters
Technical Data
ParameterSymbolValue
Overall Width0.000 mm
Radial Rating1,350,000 N
Axial Rating0 N
Dynamic Rating C11,350,000 N
Dynamic Rating C900 N
Dynamic Axial Rating Ca900 N
Dynamic Axial Rating Ca10 N
Static Radial Rating C02,850,000 N
Extended Dynamic Rating Ce0 N
Static Axial Rating C0A0 N

Technical documents & data sheet

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Record identity
TIMKEN NJ18/670EMA
Document matching
Exact designation, assembly scope, revision and units must agree.

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