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TIMKEN / Cylindrical 1-row

TIMKEN NJ1044MAC4

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

Technical data available
Bore diameterd
220 mm
Outside diameterD
340 mm
WidthB
56 mm
Dynamic load ratingC
565 kN
Static load ratingC0
765 kN
Mass≈m
18.9 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
SeriesEX27782
Variant / constructionCylindrical 1-Row
Bore diameterd220 mm
Outside diameterD340 mm
WidthB56 mm
Basic dynamic load ratingC565 kN
Basic static load ratingC0765 kN
Mass≈m18.9 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 Factor0.1300
Manufacturer Identity9 parameters
Manufacturer Identity
ParameterSymbolValue
BrandTimken
Material Number000000000100211887
World Assembly Part NumberNJ1044MA
Inner Ring Part Number220ARJA10
Outer Ring Part Number220ERUA10
Drawing NumberM104604
Upc0053893773711
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 | 8.6614 in Bore | 13.3858 in OD | 2.2047 in Width | Open | Cylindrical Bore | Machined Window Brass Cage | C4 Clearance
Number Of Rows1
Tapered BoreN
Technical Data10 parameters
Technical Data
ParameterSymbolValue
Overall Width0.000 mm
Radial Rating565,000 N
Axial Rating0 N
Dynamic Rating C1565,000 N
Dynamic Rating C900 N
Dynamic Axial Rating Ca900 N
Dynamic Axial Rating Ca10 N
Static Radial Rating C0765,000 N
Extended Dynamic Rating Ce0 N
Static Axial Rating C0A0 N

Technical documents & data sheet

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Record identity
TIMKEN NJ1044MAC4
Document matching
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