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TIMKEN / Cylindrical 1-row

TIMKEN NJ18/850EMAC3

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

Technical data available
Bore diameterd
850 mm
Outside diameterD
1030 mm
WidthB
82 mm
Dynamic load ratingC
1960 kN
Static load ratingC0
4390 kN
Mass≈m
141.7 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
SeriesNCS-983975
Variant / constructionCylindrical 1-Row
Bore diameterd850 mm
Outside diameterD1030 mm
WidthB82 mm
Basic dynamic load ratingC1960 kN
Basic static load ratingC04390 kN
Mass≈m141.7 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 Factor0.3322
Manufacturer Identity9 parameters
Manufacturer Identity
ParameterSymbolValue
BrandTimken
Material Number000000000190047770
World Assembly Part NumberNJ18/850EMA
Inner Ring Part Number850ARJE18
Outer Ring Part Number850ERUE18
Drawing NumberM955177
Upc0013992357328
Official Source SystemCORE BP - DS DF
Official Last Run2026-08-23T20:02:47.753
Product Identity4 parameters
Product Identity
ParameterSymbolValue
Type DescriptionCylindrical 1-Row
ConstructionSingle Row Cylindrical Roller Bearing | Imperial Series | 33.4646 in Bore | 40.5512 in OD | 3.2283 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C3 Clearance
Number Of Rows1
Tapered BoreN
Technical Data10 parameters
Technical Data
ParameterSymbolValue
Overall Width0.000 mm
Radial Rating1,960,000 N
Axial Rating0 N
Dynamic Rating C11,960,000 N
Dynamic Rating C900 N
Dynamic Axial Rating Ca900 N
Dynamic Axial Rating Ca10 N
Static Radial Rating C04,390,000 N
Extended Dynamic Rating Ce0 N
Static Axial Rating C0A0 N

Technical documents & data sheet

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Record identity
TIMKEN NJ18/850EMAC3
Document matching
Exact designation, assembly scope, revision and units must agree.

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