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TIMKEN / Radial deep-groove ball

TIMKEN 618/850MA

Deep groove ball 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
564 kN
Static load ratingC0
1290 kN
Mass≈m
308.65 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
Series61800
Variant / constructionRadial Deep-Groove Ball
Bore diameterd850 mm
Outside diameterD1030 mm
WidthB82 mm
Basic dynamic load ratingC564 kN
Basic static load ratingC01290 kN
Mass≈m308.65 kg
SealingOpen
CageBrass cage
Calculation Factors6 parameters
Calculation Factors
ParameterSymbolValue
K Factor0.00
Y1 Factor0.00
Y2 Factor0.00
Y0 Factor0.50
E Factor0.00
Cg Factor0.2151
Manufacturer Identity6 parameters
Manufacturer Identity
ParameterSymbolValue
BrandTimken
Material Number000000000101973637
World Assembly Part Number618/850MA
Upc0013992462367
Official Source SystemCORE BP - DS DF
Official Last Run2026-08-23T20:02:46.733
Product Identity4 parameters
Product Identity
ParameterSymbolValue
Type DescriptionRadial Deep-Groove Ball
ConstructionSingle Row Deep Groove Ball Bearing | Imperial Series | 33.4646 in Bore | 40.5512 in OD | 3.2283 in Width | Open | Cylindrical Bore | Brass Cage | C0 Clearance | ISO P0 Tolerance
Number Of Rows1
Tapered BoreN
Technical Data10 parameters
Technical Data
ParameterSymbolValue
Overall Width0.000 mm
Radial Rating0 N
Axial Rating0 N
Dynamic Rating C1564,000 N
Dynamic Rating C900 N
Dynamic Axial Rating Ca900 N
Dynamic Axial Rating Ca10 N
Static Radial Rating C01,290,000 N
Extended Dynamic Rating Ce0 N
Static Axial Rating C0A0 N

Technical documents & data sheet

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Record identity
TIMKEN 618/850MA
Document matching
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