Dead Center

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Related to dead centre: Top dead centre

dead center

[¦ded ′sen·tər]
(mechanical engineering)
A position of a crank in which the turning force applied to it by the connecting rod is zero; occurs when the crank and rod are in a straight line.
A support for the work on a lathe which does not turn with the work.

Dead Center

 

the extreme position of a piston in the cylinder of a piston engine, at which the motion of the piston changes direction. The piston position at the greatest distance from the crank is known as top dead center, and the position closest to the crank is known as bottom dead center. When the piston is at dead center, its velocity is zero, and the forces acting upon it do not generate an impulse (momentum) for displacement of the crank. In theoretical mechanics the positions of the piston at dead center are sometimes called limit positions (points).

References in periodicals archive ?
It is because if you sit dead centre only a complete idiot would attempt to go past you to claim a seat.
And now in New Street Law he is at the, er, dead centre of yet another cover-up.
The meeting has been called to press for action to get more parking spaces, otherwise there is a danger Consett will be" a commuter town with a dead centre.
Rec were back on level terms 15 minutes later after Nicky Sharpies was fouled 20 yards out, dead centre of the Iveagh goal.
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Tenders are invited for Mt6 Carbide Tipped 90 Degree Threaded End Type Dead Centre With Carbide Length Of More Than 20Mm K20 Dia 40Mm As Per The Enclosed Drawing No.
Limited Tenders are invited for Dead Centre For Gioria Make Cylindrical Grinding Machine Size: Mt-6 As Per Drawing No: Tech-40020
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Tenders are invited for Carbide Tipped Dead Centre As Per Drg.