Differential screw


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a compound screw by which a motion is produced equal to the difference of the motions of the component screws.

See also: differential

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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References in periodicals archive ?
These benefits are achieved with a unique design consisting of only three parts--head, holder, and differential screw. The fact that all functions are activated with a single screw makes the HFS very easy to use.
Toolholders
These benefits are achieved with the help of three parts: head, holder, and differential screw. The screw draws the taper in to make face contact or ejects it, depending on the direction of rotation.
Face contact toolholder
This wedge is activated by a differential screw - pulling the shank into the adaptor.
Making a good idea, HSK even better

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