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jackshaft Syllabification: jack·shaft
Pronunciation: /ˈjakˌSHaft/

Definition of jackshaft in English:


A small auxiliary or intermediate shaft in machinery.
Example sentences
  • The tip jack shaft comprises at least one group of contact links which are arranged in a comb-type manner on the wide side of the tip jack shaft.
  • Using Dave's lathe, we made a new coupler that would keyway inside our fulcrum and jack shafts. This removed much of our runout.
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